$TCBK
Trico Bancshares Stock $tcbk

$tcbk Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000035617124000012 Filed on February 29, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$12.64M		$50.09M
YoY Change	12.86%		0.65%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.538M	$2.784M	$12.48M
YoY Change	-21.23%	-13.67%	1.12%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$32.68M		$81.68M
YoY Change	241.46%		757.14%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$37.70M	$36.40M	$160.9M
YoY Change	-23.04%	-28.72%	-7.48%
Income Tax	$9.949M	$10.33M	$43.52M
% Of Pretax Income	26.39%	28.37%	27.04%
Net Earnings	$27.75M	$26.08M	$117.4M
YoY Change	-22.56%	-28.25%	-6.4%
Net Earnings / Revenue	219.59%		234.37%
Basic Earnings Per Share	$0.83		$3.53
Diluted Earnings Per Share	$0.83	$0.78	$3.52
COMMON SHARES
Basic Shares Outstanding	33.27M shares	33.27M shares	33.26M shares
Diluted Shares Outstanding	33.37M shares		33.36M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$82.84M	$98.70M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$97.24M	$97.48M	$97.48M
YoY Change	34.88%	-1.72%	-1.72%
Goodwill	$304.4M	$304.4M
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets			$124.3M
YoY Change			-10.67%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$9.814B	$9.910B	$9.910B
YoY Change	-0.29%	-0.21%	-0.21%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$10.22M	$8.445M	$8.445M
YoY Change	522.28%	623.65%	623.65%
Accrued Expenses	$28.30M	$28.26M	$28.26M
YoY Change	-12.19%	-2.56%	-2.56%
Deferred Revenue
YoY Change
Short-Term Debt	$392.4M	$632.6M	$632.6M
YoY Change	-9.61%	139.07%	139.07%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$430.9M	$669.3M	$669.3M
YoY Change	-7.92%	2118.32%	2118.32%
LONG-TERM LIABILITIES
Long-Term Debt	$101.1M	$101.1M	$101.1M
YoY Change	0.07%	0.06%	0.06%
Other Long-Term Liabilities	$131.0M	$146.0M	$146.0M
YoY Change	-16.67%	-8.61%	-8.61%
Total Long-Term Liabilities	$232.1M	$247.1M	$247.1M
YoY Change	-10.12%	-5.25%	-5.25%
TOTAL LIABILITIES
Total Short-Term Liabilities	$430.9M	$669.3M	$669.3M
Total Long-Term Liabilities	$232.1M	$247.1M	$247.1M
Total Liabilities	$8.651B	$8.750B	$8.750B
YoY Change	-1.16%	-1.51%	-1.51%
SHAREHOLDERS EQUITY
Retained Earnings	$631.0M	$615.5M
YoY Change	11.76%	13.38%
Common Stock	$696.5M	$697.3M
YoY Change	0.19%	-0.01%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.163B	$1.160B	$1.160B
YoY Change
Total Liabilities & Shareholders Equity	$9.814B	$9.910B	$9.910B
YoY Change	-0.29%	-0.21%	-0.21%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$27.75M	$26.08M	$117.4M
YoY Change	-22.56%	-28.25%	-6.4%
Depreciation, Depletion And Amortization	$2.538M	$2.784M	$12.48M
YoY Change	-21.23%	-13.67%	1.12%
Cash From Operating Activities	$25.08M	$36.49M	$138.9M
YoY Change	-35.62%	-33.54%	-14.74%
INVESTING ACTIVITIES
Capital Expenditures	$1.028M	$986.0K	$4.886M
YoY Change	-15.25%	100.0%	34.86%
Acquisitions
YoY Change
Other Investing Activities	$61.02M	$43.25M	$33.45M
YoY Change	-47.61%	-158.26%	-104.65%
Cash From Investing Activities	$59.99M	$42.17M	$28.57M
YoY Change	-47.95%	-156.42%	-103.95%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$100.9M	-91.08M	-$176.0M
YoY Change	-33.2%	-23.75%	74.48%
NET CHANGE
Cash From Operating Activities	$25.08M	36.49M	$138.9M
Cash From Investing Activities	$59.99M	42.17M	$28.57M
Cash From Financing Activities	-$100.9M	-91.08M	-$176.0M
Net Change In Cash	-$15.87M	-12.43M	-$8.529M
YoY Change	-610.95%	-91.08%	-98.71%
FREE CASH FLOW
Cash From Operating Activities	$25.08M	$36.49M	$138.9M
Capital Expenditures	$1.028M	$986.0K	$4.886M
Free Cash Flow	$24.05M	$35.50M	$134.0M
YoY Change	-36.27%	-34.75%	-15.87%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023	us-gaap	Interest Expense InterestExpense	81677000	usd
CY2023	tcbk	Number Of Subsidiary Business Trust NumberOfSubsidiaryBusinessTrust	5	trust
CY2023Q4	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	1800000	usd
CY2023	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:15pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:120%">Segment and Significant Group Concentration of Credit Risk</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout California. The Company has a diversified loan portfolio within the business segments located in this geographical area. The Company currently classifies all its operation into one business segment that it denotes as community banking.</span></div>
CY2023	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7500	shares
CY2021	tcbk	Market Value Of Shares Tendered By Employees In Lieu Of Cash To Pay For Exercise Of Options And Or Related Taxes MarketValueOfSharesTenderedByEmployeesInLieuOfCashToPayForExerciseOfOptionsAndOrRelatedTaxes	2118000	usd
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000356171
CY2023	dei	Entity Registrant Name EntityRegistrantName	TriCo Bancshares
CY2021	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost Credit Interest Cost Statement Of Income Or Comprehensive Income Extensible List DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleList	http://fasb.org/us-gaap/2023#OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
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CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	CA
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	95973
CY2023	dei	City Area Code CityAreaCode	530
CY2023	dei	Local Phone Number LocalPhoneNumber	898-0300
CY2023	dei	Security12b Title Security12bTitle	Common Stock
CY2023	dei	Trading Symbol TradingSymbol	TCBK
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	1400000000	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	33268102	shares
CY2023	dei	Auditor Name AuditorName	Moss Adams LLP
CY2023	dei	Auditor Location AuditorLocation	San Francisco, California
CY2023	dei	Auditor Firm AuditorFirmId	659
CY2023Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	81626000	usd
CY2022Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	96323000	usd
CY2023Q4	tcbk	Cash At Federal Reserve And Other Banks CashAtFederalReserveAndOtherBanks	17075000	usd
CY2022Q4	tcbk	Cash At Federal Reserve And Other Banks CashAtFederalReserveAndOtherBanks	10907000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	98701000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	107230000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	2634000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	2598000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2384325000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2742987000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2152504000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2452438000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	133494000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	160983000	usd
CY2023Q4	us-gaap	Restricted Investments RestrictedInvestments	17250000	usd
CY2022Q4	us-gaap	Restricted Investments RestrictedInvestments	17250000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	458000	usd
CY2022Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1846000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6794470000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6450447000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	121522000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	105680000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	6672948000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	6344767000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	71347000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	72327000	usd
CY2023Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	136892000	usd
CY2022Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	133742000	usd
CY2023Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	36768000	usd
CY2022Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	31856000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	304442000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	304442000	usd
CY2023Q4	tcbk	Core Deposit Intangible CoreDepositIntangible	10552000	usd
CY2022Q4	tcbk	Core Deposit Intangible CoreDepositIntangible	16670000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	26133000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	26862000	usd
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CY2022Q4	us-gaap	Other Assets OtherAssets	257975000	usd
CY2023Q4	us-gaap	Assets Assets	9910089000	usd
CY2022Q4	us-gaap	Assets Assets	9930986000	usd
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2722689000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	3502095000	usd
CY2023Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	5111349000	usd
CY2022Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	4826918000	usd
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CY2022Q4	us-gaap	Deposits Deposits	8329013000	usd
CY2023Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	8445000	usd
CY2022Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	1167000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	28261000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	29004000	usd
CY2023Q4	us-gaap	Other Liabilities OtherLiabilities	145982000	usd
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	159741000	usd
CY2023Q4	us-gaap	Other Borrowings OtherBorrowings	632582000	usd
CY2022Q4	us-gaap	Other Borrowings OtherBorrowings	264605000	usd
CY2023Q4	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	101099000	usd
CY2022Q4	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	101040000	usd
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CY2022Q4	us-gaap	Liabilities Liabilities	8884570000	usd
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CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	33268102	shares
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CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	33331513	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	697349000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	697448000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	615502000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	542873000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-153169000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-193905000	usd
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CY2023	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	356710000	usd
CY2022	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	285375000	usd
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CY2023	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	5120000	usd
CY2022	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	5199000	usd
CY2021	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	3568000	usd
CY2023	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	73924000	usd
CY2022	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	59395000	usd
CY2021	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	29361000	usd
CY2023	us-gaap	Dividend Income Operating DividendIncomeOperating	1294000	usd
CY2022	us-gaap	Dividend Income Operating DividendIncomeOperating	1137000	usd
CY2021	us-gaap	Dividend Income Operating DividendIncomeOperating	991000	usd
CY2023	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	1306000	usd
CY2022	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	4399000	usd
CY2021	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	858000	usd
CY2023	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	438354000	usd
CY2022	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	355505000	usd
CY2021	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	277047000	usd
CY2023	us-gaap	Interest Expense Deposits InterestExpenseDeposits	55087000	usd
CY2022	us-gaap	Interest Expense Deposits InterestExpenseDeposits	4689000	usd
CY2021	us-gaap	Interest Expense Deposits InterestExpenseDeposits	3318000	usd
CY2022	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	421000	usd
CY2021	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	22000	usd
CY2021	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	2168000	usd
CY2022	us-gaap	Interest Expense InterestExpense	9529000	usd
CY2021	us-gaap	Interest Expense InterestExpense	5508000	usd
CY2023	tcbk	Provision For Benefit From Provisions For Credit Losses ProvisionForBenefitFromProvisionsForCreditLosses	23990000	usd
CY2022	tcbk	Provision For Benefit From Provisions For Credit Losses ProvisionForBenefitFromProvisionsForCreditLosses	18470000	usd
CY2021	tcbk	Provision For Benefit From Provisions For Credit Losses ProvisionForBenefitFromProvisionsForCreditLosses	-6775000	usd
CY2023	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	50088000	usd
CY2023	tcbk	Commissions On Sale Of Non Deposit Investment Products CommissionsOnSaleOfNonDepositInvestmentProducts	4517000	usd
CY2022	tcbk	Commissions On Sale Of Non Deposit Investment Products CommissionsOnSaleOfNonDepositInvestmentProducts	3986000	usd
CY2021	tcbk	Commissions On Sale Of Non Deposit Investment Products CommissionsOnSaleOfNonDepositInvestmentProducts	3668000	usd
CY2023	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3150000	usd
CY2022	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2858000	usd
CY2021	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2775000	usd
CY2021	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	9580000	usd
CY2023	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2763000	usd
CY2022	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	4095000	usd
CY2021	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3693000	usd
CY2023	us-gaap	Noninterest Income NoninterestIncome	61400000	usd
CY2022	us-gaap	Noninterest Income NoninterestIncome	63046000	usd
CY2021	us-gaap	Noninterest Income NoninterestIncome	63664000	usd
CY2023	us-gaap	Labor And Related Expense LaborAndRelatedExpense	135795000	usd
CY2022	us-gaap	Labor And Related Expense LaborAndRelatedExpense	129852000	usd
CY2021	us-gaap	Labor And Related Expense LaborAndRelatedExpense	106351000	usd
CY2023	us-gaap	Other Noninterest Expense OtherNoninterestExpense	97387000	usd
CY2022	us-gaap	Other Noninterest Expense OtherNoninterestExpense	86793000	usd
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	71924000	usd
CY2023	us-gaap	Noninterest Expense NoninterestExpense	233182000	usd
CY2022	us-gaap	Noninterest Expense NoninterestExpense	216645000	usd
CY2021	us-gaap	Noninterest Expense NoninterestExpense	178275000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	160905000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	173907000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	163703000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	43515000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	48488000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	46048000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	117390000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	125419000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	117655000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.53
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.85
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.96
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.52
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.83
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.94
CY2023	us-gaap	Net Income Loss NetIncomeLoss	117390000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	125419000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	117655000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	41365000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-204376000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-13788000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	263000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-8101000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-2602000	usd
CY2023	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsNetOfTax	-366000	usd
CY2022	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsNetOfTax	1389000	usd
CY2021	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsNetOfTax	-113000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	40736000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-194886000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-11299000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	158126000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-69467000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	106356000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	925114000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-11299000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	1728000	usd
CY2021	tcbk	Adjustments To Additional Paid In Capital Share Based Compensation Market Plus Service Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationMarketPlusServiceRestrictedStockUnitsRequisiteServicePeriodRecognition	910000	usd
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	758000	usd
CY2021	tcbk	Adjustments To Additional Paid In Capital Share Based Compensation Market Plus Service Restricted Stock Units Requisite Service Period Released AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationMarketPlusServiceRestrictedStockUnitsRequisiteServicePeriodReleased	0	usd
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	4958000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.00
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	29724000	usd
CY2022	tcbk	Adjustments To Additional Paid In Capital Share Based Compensation Market Plus Service Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationMarketPlusServiceRestrictedStockUnitsRequisiteServicePeriodRecognition	986000	usd
CY2022	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1190000	usd
CY2022	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	173585000	usd
CY2022	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	27148000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.10
CY2022	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	35797000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1046416000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	117390000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	40736000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	2806000	usd
CY2023	tcbk	Adjustments To Additional Paid In Capital Share Based Compensation Market Plus Service Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationMarketPlusServiceRestrictedStockUnitsRequisiteServicePeriodRecognition	1319000	usd
CY2023	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	156000	usd
CY2023	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	9240000	usd
CY2023	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.20
CY2023	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	39901000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1159682000	usd
CY2023	us-gaap	Profit Loss ProfitLoss	117390000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	125419000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	117655000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	17087000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2381000	usd
CY2023	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	6366000	usd
CY2022	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	6012000	usd
CY2021	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	6363000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6118000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6334000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5464000	usd
CY2023	tcbk	Provision For Benefit From Provisions For Credit Losses ProvisionForBenefitFromProvisionsForCreditLosses	23990000	usd
CY2022	tcbk	Provision For Benefit From Provisions For Credit Losses ProvisionForBenefitFromProvisionsForCreditLosses	18470000	usd
CY2021	tcbk	Provision For Benefit From Provisions For Credit Losses ProvisionForBenefitFromProvisionsForCreditLosses	-6775000	usd
CY2023	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-312000	usd
CY2022	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-6641000	usd
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-6685000	usd
CY2023	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-284000	usd
CY2022	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
CY2023	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	43313000	usd
CY2022	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	71600000	usd
CY2021	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	217210000	usd
CY2023	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	45467000	usd
CY2022	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	74922000	usd
CY2021	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	227938000	usd
CY2023	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1166000	usd
CY2022	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2342000	usd
CY2021	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	9580000	usd
CY2023	tcbk	Change In Market Value Of Mortgage Servicing Rights ChangeInMarketValueOfMortgageServicingRights	506000	usd
CY2022	tcbk	Change In Market Value Of Mortgage Servicing Rights ChangeInMarketValueOfMortgageServicingRights	-301000	usd
CY2021	tcbk	Change In Market Value Of Mortgage Servicing Rights ChangeInMarketValueOfMortgageServicingRights	872000	usd
CY2023	tcbk	Provision For Benefit From Losses On Foreclosed Assets ProvisionForBenefitFromLossesOnForeclosedAssets	-18000	usd
CY2022	tcbk	Provision For Benefit From Losses On Foreclosed Assets ProvisionForBenefitFromLossesOnForeclosedAssets	-166000	usd
CY2021	tcbk	Provision For Benefit From Losses On Foreclosed Assets ProvisionForBenefitFromLossesOnForeclosedAssets	0	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2399000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-8022000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-936000	usd
CY2023	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	114000	usd
CY2022	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	316000	usd
CY2021	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	233000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	6378000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	5904000	usd
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	4964000	usd
CY2023	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-23000	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	1070000	usd
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	439000	usd
CY2023	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3150000	usd
CY2022	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2858000	usd
CY2021	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2775000	usd
CY2023	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	0	usd
CY2022	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	309000	usd
CY2021	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	702000	usd
CY2023	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	36000	usd
CY2022	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-340000	usd
CY2021	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-86000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	4125000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	3869000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	2638000	usd
CY2023	tcbk	Unrealized Gain Loss Other Real Estate UnrealizedGainLossOtherRealEstate	-797000	usd
CY2022	tcbk	Unrealized Gain Loss Other Real Estate UnrealizedGainLossOtherRealEstate	-113000	usd
CY2021	tcbk	Unrealized Gain Loss Other Real Estate UnrealizedGainLossOtherRealEstate	-9000	usd
CY2023	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	6364000	usd
CY2022	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	6033000	usd
CY2021	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	5452000	usd
CY2023	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	4912000	usd
CY2022	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	9170000	usd
CY2021	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-712000	usd
CY2023	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	7278000	usd
CY2022	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-287000	usd
CY2021	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-434000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-18647000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	138887000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	162895000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	132207000	usd
CY2023	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	usd
CY2022	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	426883000	usd
CY2021	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	usd
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	321738000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	267830000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	371632000	usd
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	27260000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	38399000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	83929000	usd
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	71024000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	34468000	usd
CY2022	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	699035000	usd
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1190690000	usd
CY2023	tcbk	Payment For Loan And Lease Originations And Principal Collections PaymentForLoanAndLeaseOriginationsAndPrincipalCollections	345902000	usd
CY2022	tcbk	Payment For Loan And Lease Originations And Principal Collections PaymentForLoanAndLeaseOriginationsAndPrincipalCollections	739037000	usd
CY2021	tcbk	Payment For Loan And Lease Originations And Principal Collections PaymentForLoanAndLeaseOriginationsAndPrincipalCollections	45812000	usd
CY2023	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	6423000	usd
CY2022	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	22845000	usd
CY2021	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	108433000	usd
CY2023	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	224000	usd
CY2022	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	873000	usd
CY2021	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	1526000	usd
CY2023	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	usd
CY2022	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	6690000	usd
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2743000	usd
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4886000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3623000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3196000	usd
CY2023	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	usd
CY2022	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	641000	usd
CY2021	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	4490000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	28567000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-723224000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-883811000	usd
CY2023	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-494975000	usd
CY2022	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-253625000	usd
CY2021	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	861225000	usd
CY2023	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	367977000	usd
CY2022	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	214518000	usd
CY2021	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	23173000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	9240000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	27148000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4344000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	39901000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	35797000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	29724000	usd
CY2023	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	156000	usd
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1190000	usd
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	144000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-175983000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-100862000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	850474000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-8529000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-661191000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	107230000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	74399000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	9290000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	5942000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	45300000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	41000000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	46300000	usd
CY2023	tcbk	Unrealized Gain Loss On Securities Available For Sale UnrealizedGainLossOnSecuritiesAvailableForSale	58727000	usd
CY2022	tcbk	Unrealized Gain Loss On Securities Available For Sale UnrealizedGainLossOnSecuritiesAvailableForSale	-290157000	usd
CY2021	tcbk	Unrealized Gain Loss On Securities Available For Sale UnrealizedGainLossOnSecuritiesAvailableForSale	-19575000	usd
CY2021	tcbk	Loans Transferred To Foreclosed Assets LoansTransferredToForeclosedAssets	1052000	usd
CY2023	tcbk	Market Value Of Shares Tendered By Employees In Lieu Of Cash To Pay For Exercise Of Options And Or Related Taxes MarketValueOfSharesTenderedByEmployeesInLieuOfCashToPayForExerciseOfOptionsAndOrRelatedTaxes	2266000	usd
CY2022	tcbk	Market Value Of Shares Tendered By Employees In Lieu Of Cash To Pay For Exercise Of Options And Or Related Taxes MarketValueOfSharesTenderedByEmployeesInLieuOfCashToPayForExerciseOfOptionsAndOrRelatedTaxes	2522000	usd
CY2023	tcbk	Obligations Incurred Leased Assets ObligationsIncurredLeasedAssets	4300000	usd
CY2022	tcbk	Obligations Incurred Leased Assets ObligationsIncurredLeasedAssets	6149000	usd
CY2021	tcbk	Obligations Incurred Leased Assets ObligationsIncurredLeasedAssets	2883000	usd
CY2023	us-gaap	Cash Acquired In Excess Of Payments To Acquire Business CashAcquiredInExcessOfPaymentsToAcquireBusiness		usd
CY2022	us-gaap	Cash Acquired In Excess Of Payments To Acquire Business CashAcquiredInExcessOfPaymentsToAcquireBusiness		usd
CY2021	us-gaap	Cash Acquired In Excess Of Payments To Acquire Business CashAcquiredInExcessOfPaymentsToAcquireBusiness		usd
CY2023Q4	tcbk	Number Of Loan Production Offices NumberOfLoanProductionOffices	2	office
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:15pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:120%">Use of Estimates in the Preparation of Financial Statements</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.</span></div>
CY2022	us-gaap	Debt Securities Available For Sale Accrued Interest Writeoff DebtSecuritiesAvailableForSaleAccruedInterestWriteoff	0	usd
CY2021	us-gaap	Debt Securities Available For Sale Accrued Interest Writeoff DebtSecuritiesAvailableForSaleAccruedInterestWriteoff	0	usd
CY2023	us-gaap	Debt Securities Available For Sale Accrued Interest Writeoff DebtSecuritiesAvailableForSaleAccruedInterestWriteoff	0	usd
CY2023	us-gaap	Debt Securities Held To Maturity Transfer To Available For Sale Allowance For Credit Loss Expense DebtSecuritiesHeldToMaturityTransferToAvailableForSaleAllowanceForCreditLossExpense	0	usd
CY2021	us-gaap	Debt Securities Held To Maturity Transfer To Available For Sale Allowance For Credit Loss Expense DebtSecuritiesHeldToMaturityTransferToAvailableForSaleAllowanceForCreditLossExpense	0	usd
CY2022	us-gaap	Debt Securities Held To Maturity Transfer To Available For Sale Allowance For Credit Loss Expense DebtSecuritiesHeldToMaturityTransferToAvailableForSaleAllowanceForCreditLossExpense	0	usd
CY2023	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2022	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2021	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2023	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-top:9pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:120%">Reclassifications</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">Certain amounts reported in previous consolidated financial statements have been reclassified and recalculated to conform to the presentation in this report. These reclassifications did not affect previously reported amounts of net income, total assets or total shareholders’ equity.</span></div>
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2384325000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	525000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	232346000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2152504000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	133494000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	6000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	8374000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	125126000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2022	us-gaap	Debt Securities Held To Maturity Credit Loss Expense Reversal DebtSecuritiesHeldToMaturityCreditLossExpenseReversal	0	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2742987000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	421000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	290970000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2452438000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	160983000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	15000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	11060000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	149938000	usd
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	71000000	usd
CY2023	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-300000	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2023Q4	tcbk	Securities Pledged As Collateral SecuritiesPledgedAsCollateral	702200000	usd
CY2022Q4	tcbk	Securities Pledged As Collateral SecuritiesPledgedAsCollateral	595800000	usd
CY2023Q4	us-gaap	Us Government Agencies Securities At Carrying Value USGovernmentAgenciesSecuritiesAtCarryingValue	1400000000	usd
CY2023	tcbk	Life Of Mortgage Backed Securities LifeOfMortgageBackedSecurities	P6Y8M12D
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	83239000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	81775000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	0	usd
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	0	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	47769000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	44932000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	5829000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	5640000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	367733000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	354333000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	89070000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	83726000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1885584000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1671464000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	38595000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	35760000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2384325000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2152504000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	133494000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	125126000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	66657000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	751000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1997383000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	231595000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	2064040000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	232346000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	0	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	123271000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	8374000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	123271000	usd
CY2023Q4	tcbk	Debt Securities Held To Maturity Unrealized Accumulated Loss DebtSecuritiesHeldToMaturityUnrealizedAccumulatedLoss	8374000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1218843000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	193869000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1185676000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	97101000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	2404519000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	290970000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	0	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	148107000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	11060000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	148107000	usd
CY2022Q4	tcbk	Debt Securities Held To Maturity Unrealized Accumulated Loss DebtSecuritiesHeldToMaturityUnrealizedAccumulatedLoss	11060000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6794470000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6450447000	usd
CY2023Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	6834935000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	6496210000	usd
CY2023Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	15826000	usd
CY2022Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	15275000	usd
CY2023Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-24639000	usd
CY2022Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-30488000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6794470000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6450447000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	121522000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	105680000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	105700000	usd
CY2023	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	22500000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	121522000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	105680000	usd
CY2022Q1	us-gaap	Financing Receivable Purchased With Credit Deterioration Amount At Par Value FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue	68513000	usd
CY2022Q1	us-gaap	Financing Receivable Purchased With Credit Deterioration Allowance For Credit Loss At Acquisition Date FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate	2037000	usd
CY2022Q1	us-gaap	Financing Receivable Purchased With Credit Deterioration Discount Premium FinancingReceivablePurchasedWithCreditDeteriorationDiscountPremium	2956000	usd
CY2022Q1	us-gaap	Financing Receivable Purchased With Credit Deterioration Amount At Purchase Price FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice	63520000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	105680000	usd
CY2023	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	8140000	usd
CY2023	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1527000	usd
CY2023	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	22455000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	121522000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	4315000	usd
CY2023	tcbk	Off Balance Sheet Credit Loss Writeoff OffBalanceSheetCreditLossWriteoff	0	usd
CY2023	tcbk	Off Balance Sheet Credit Loss Recovery OffBalanceSheetCreditLossRecovery	0	usd
CY2023	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	1535000	usd
CY2023Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	5850000	usd
CY2022Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	109995000	usd
CY2023	tcbk	Credit Loss Allowance For Credit Loss Writeoff CreditLossAllowanceForCreditLossWriteoff	8140000	usd
CY2023	tcbk	Credit Loss Allowance For Credit Loss Recovery CreditLossAllowanceForCreditLossRecovery	1527000	usd
CY2023	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	23990000	usd
CY2023Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	127372000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	85376000	usd
CY2022	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1585000	usd
CY2022	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1907000	usd
CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	17945000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	105680000	usd
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3790000	usd
CY2022	tcbk	Off Balance Sheet Credit Loss Writeoff OffBalanceSheetCreditLossWriteoff	0	usd
CY2022	tcbk	Off Balance Sheet Credit Loss Recovery OffBalanceSheetCreditLossRecovery	0	usd
CY2022	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	525000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	4315000	usd
CY2021Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	89166000	usd
CY2022	tcbk	Credit Loss Allowance For Credit Loss Writeoff CreditLossAllowanceForCreditLossWriteoff	1585000	usd
CY2022	tcbk	Credit Loss Allowance For Credit Loss Recovery CreditLossAllowanceForCreditLossRecovery	1907000	usd
CY2022	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	18470000	usd
CY2022Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	109995000	usd
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	91847000	usd
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2392000	usd
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3086000	usd
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-7165000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	85376000	usd
CY2021	tcbk	Off Balance Sheet Credit Loss Writeoff OffBalanceSheetCreditLossWriteoff	0	usd
CY2021	tcbk	Off Balance Sheet Credit Loss Recovery OffBalanceSheetCreditLossRecovery	0	usd
CY2021Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3790000	usd
CY2020Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	95247000	usd
CY2021	tcbk	Credit Loss Allowance For Credit Loss Writeoff CreditLossAllowanceForCreditLossWriteoff	2392000	usd
CY2021	tcbk	Credit Loss Allowance For Credit Loss Recovery CreditLossAllowanceForCreditLossRecovery	3086000	usd
CY2021	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	-6775000	usd
CY2021Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	89166000	usd
CY2023Q4	tcbk	Financing Receivable Threshold For Loan Analysis FinancingReceivableThresholdForLoanAnalysis	1000000	usd
CY2023Q4	tcbk	Financing Receivable Threshold For Loan Analysis FinancingReceivableThresholdForLoanAnalysis	1000000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	609083000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	1282292000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	1245469000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	561665000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	459384000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	1538371000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	1086036000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	12170000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6794470000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	529000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	369000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	240000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	3701000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	39000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	2237000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	941000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	84000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	8140000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	1246402000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	1284725000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	607121000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	526167000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	378767000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	1383071000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	1010395000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	13799000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6450447000	usd
CY2023Q4	tcbk	Financing Receivable Nonccrual No Allowance Including Guaranteed Loans FinancingReceivableNonccrualNoAllowanceIncludingGuaranteedLoans	19588000	usd
CY2023Q4	tcbk	Financing Receivable Nonaccrual Including Guaranteed Loans FinancingReceivableNonaccrualIncludingGuaranteedLoans	31881000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	10000	usd
CY2022Q4	tcbk	Financing Receivable Nonccrual No Allowance Including Guaranteed Loans FinancingReceivableNonccrualNoAllowanceIncludingGuaranteedLoans	18230000	usd
CY2022Q4	tcbk	Financing Receivable Nonaccrual Including Guaranteed Loans FinancingReceivableNonaccrualIncludingGuaranteedLoans	21321000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	usd
CY2023Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	18822000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	31003000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	10000	usd
CY2022Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	18125000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	21096000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	0	usd
CY2023	tcbk	Loans Receivable Impaired Interest Lost On Nonaccrual Loans LoansReceivableImpairedInterestLostOnNonaccrualLoans	2500000	usd
CY2022	tcbk	Loans Receivable Impaired Interest Lost On Nonaccrual Loans LoansReceivableImpairedInterestLostOnNonaccrualLoans	1400000	usd
CY2021	tcbk	Loans Receivable Impaired Interest Lost On Nonaccrual Loans LoansReceivableImpairedInterestLostOnNonaccrualLoans	2200000	usd
CY2023	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	1000000	usd
CY2022	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	600000	usd
CY2021	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	500000	usd
CY2023	tcbk	Principal Forgiveness PrincipalForgiveness	0	usd
CY2023	tcbk	Payment Delay Extension Amount PaymentDelayExtensionAmount	152000	usd
CY2023	tcbk	Allowance For Credit Loss Term Change Available Credit Reduction AllowanceForCreditLossTermChangeAvailableCreditReduction	60000	usd
CY2023	tcbk	Combination Payment Delay Or Term Reduction CombinationPaymentDelayOrTermReduction	1430000	usd
CY2023	tcbk	Financing Receivable Amortized Costs Basis Percentage Outstanding FinancingReceivableAmortizedCostsBasisPercentageOutstanding	0.0061
CY2023	tcbk	Financing Receivable Modification Reduction Of Available Credit Amount FinancingReceivableModificationReductionOfAvailableCreditAmount	11000	usd
CY2022Q4	us-gaap	Foreclosed Assets ForeclosedAssets	3439000	usd
CY2021Q4	us-gaap	Foreclosed Assets ForeclosedAssets	2594000	usd
CY2023	tcbk	Additions Reductions Transfers From Loans Related To Foreclosed Assets AdditionsReductionsTransfersFromLoansRelatedToForeclosedAssets	155000	usd
CY2022	tcbk	Additions Reductions Transfers From Loans Related To Foreclosed Assets AdditionsReductionsTransfersFromLoansRelatedToForeclosedAssets	1349000	usd
CY2023	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	206000	usd
CY2022	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	707000	usd
CY2023	us-gaap	Other Real Estate Valuation Adjustments OtherRealEstateValuationAdjustments	-683000	usd
CY2022	us-gaap	Other Real Estate Valuation Adjustments OtherRealEstateValuationAdjustments	203000	usd
CY2023Q4	us-gaap	Foreclosed Assets ForeclosedAssets	2705000	usd
CY2022Q4	us-gaap	Foreclosed Assets ForeclosedAssets	3439000	usd
CY2023	tcbk	Ending Valuation Allowance EndingValuationAllowance	739000	usd
CY2022	tcbk	Ending Valuation Allowance EndingValuationAllowance	113000	usd
CY2023	tcbk	Ending Number Of Foreclosed Assets EndingNumberOfForeclosedAssets	9	asset
CY2022	tcbk	Ending Number Of Foreclosed Assets EndingNumberOfForeclosedAssets	9	asset
CY2023	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	224000	usd
CY2022	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	873000	usd
CY2023	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	19000	usd
CY2022	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	166000	usd
CY2023Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	0	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	65154000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	61657000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	71347000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	72327000	usd
CY2023	us-gaap	Depreciation Nonproduction DepreciationNonproduction	5800000	usd
CY2022	us-gaap	Depreciation Nonproduction DepreciationNonproduction	5700000	usd
CY2021	us-gaap	Depreciation Nonproduction DepreciationNonproduction	5900000	usd
CY2022Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	133742000	usd
CY2021Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	117857000	usd
CY2023	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3150000	usd
CY2022	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2858000	usd
CY2023	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	0	usd
CY2022	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	309000	usd
CY2023	tcbk	Insurance Proceeds Receivable Reclassified To Other Assets InsuranceProceedsReceivableReclassifiedToOtherAssets	0	usd
CY2022	tcbk	Insurance Proceeds Receivable Reclassified To Other Assets InsuranceProceedsReceivableReclassifiedToOtherAssets	891000	usd
CY2023Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	136892000	usd
CY2022Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	133742000	usd
CY2023	tcbk	End Of Period Death Benefit EndOfPeriodDeathBenefit	224021000	usd
CY2022	tcbk	End Of Period Death Benefit EndOfPeriodDeathBenefit	223427000	usd
CY2023	tcbk	Number Of Policies Owned NumberOfPoliciesOwned	216	policy
CY2022	tcbk	Number Of Policies Owned NumberOfPoliciesOwned	216	policy
CY2023	tcbk	Insurance Companies Used InsuranceCompaniesUsed	14	company
CY2022	tcbk	Insurance Companies Used InsuranceCompaniesUsed	14	company
CY2023	tcbk	Current And Former Employees And Directors Covered CurrentAndFormerEmployeesAndDirectorsCovered	79	employee
CY2022	tcbk	Current And Former Employees And Directors Covered CurrentAndFormerEmployeesAndDirectorsCovered	79	employee
CY2023Q4	us-gaap	Goodwill Goodwill	304442000	usd
CY2023	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	usd
CY2023	tcbk	Goodwill Other Reductions GoodwillOtherReductions	0	usd
CY2022Q4	us-gaap	Goodwill Goodwill	304442000	usd
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2022	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2023	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2023	tcbk	Core Deposit Intangibles Reductions CoreDepositIntangiblesReductions	2046000	usd
CY2022	tcbk	Core Deposit Intangibles Reductions CoreDepositIntangiblesReductions	8074000	usd
CY2023	tcbk	Core Deposit Intangibles Additions CoreDepositIntangiblesAdditions	0	usd
CY2022	tcbk	Core Deposit Intangibles Additions CoreDepositIntangiblesAdditions	10635000	usd
CY2023Q4	us-gaap	Finite Lived Core Deposits Gross FiniteLivedCoreDepositsGross	36780000	usd
CY2022Q4	us-gaap	Finite Lived Core Deposits Gross FiniteLivedCoreDepositsGross	38826000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	22156000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	23896000	usd
CY2023	tcbk	Finite Lived Intangible Assets Accumulated Amortization Addition FiniteLivedIntangibleAssetsAccumulatedAmortizationAddition	2046000	usd
CY2022	tcbk	Finite Lived Intangible Assets Accumulated Amortization Addition FiniteLivedIntangibleAssetsAccumulatedAmortizationAddition	8074000	usd
CY2023	tcbk	Finite Lived Intangible Assets Accumulated Amortization Reductions FiniteLivedIntangibleAssetsAccumulatedAmortizationReductions	6118000	usd
CY2022	tcbk	Finite Lived Intangible Assets Accumulated Amortization Reductions FiniteLivedIntangibleAssetsAccumulatedAmortizationReductions	6334000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	26228000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	22156000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	5755000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5186000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4642000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3951000	usd
CY2023	us-gaap	Contractually Specified Servicing Fees Late Fees And Ancillary Fees Earned In Exchange For Servicing Financial Assets ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets	1808000	usd
CY2022	us-gaap	Contractually Specified Servicing Fees Late Fees And Ancillary Fees Earned In Exchange For Servicing Financial Assets ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets	1887000	usd
CY2021	us-gaap	Contractually Specified Servicing Fees Late Fees And Ancillary Fees Earned In Exchange For Servicing Financial Assets ContractuallySpecifiedServicingFeesLateFeesAndAncillaryFeesEarnedInExchangeForServicingFinancialAssets	1881000	usd
CY2023	us-gaap	Operating Lease Cost OperatingLeaseCost	5997000	usd
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	5725000	usd
CY2023	us-gaap	Short Term Lease Cost ShortTermLeaseCost	329000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	283000	usd
CY2023	us-gaap	Variable Lease Cost VariableLeaseCost	38000	usd
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	26000	usd
CY2023	us-gaap	Sublease Income SubleaseIncome	0	usd
CY2022	us-gaap	Sublease Income SubleaseIncome	0	usd
CY2023	us-gaap	Lease Cost LeaseCost	6364000	usd
CY2022	us-gaap	Lease Cost LeaseCost	6034000	usd
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	6378000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	5904000	usd
CY2023	tcbk	Right Of Use Asset Obtained In Exchange For Operating Lease Liability Net RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityNet	4300000	usd
CY2022	tcbk	Right Of Use Asset Obtained In Exchange For Operating Lease Liability Net RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityNet	6149000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y10M24D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y3M18D
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.033
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.030
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2891000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	10104000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	32529000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	4268000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	28261000	usd
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2722689000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	3502095000	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	1731814000	usd
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	1718541000	usd
CY2023Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2682068000	usd
CY2022Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2884378000	usd
CY2023Q4	tcbk	Time Deposits250000 Or More TimeDeposits250000OrMore	250180000	usd
CY2022Q4	tcbk	Time Deposits250000 Or More TimeDeposits250000OrMore	46350000	usd
CY2023Q4	tcbk	Other Time Certificates Deposits OtherTimeCertificatesDeposits	447287000	usd
CY2022Q4	tcbk	Other Time Certificates Deposits OtherTimeCertificatesDeposits	177649000	usd
CY2023Q4	us-gaap	Deposits Deposits	7834038000	usd
CY2022Q4	us-gaap	Deposits Deposits	8329013000	usd
CY2023Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	1800000	usd
CY2022Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	1800000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	626979000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	59053000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	8453000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	1868000	usd
CY2023Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	1114000	usd
CY2023Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	0	usd
CY2023Q4	us-gaap	Time Deposits TimeDeposits	697467000	usd
CY2023Q4	us-gaap	Other Borrowings OtherBorrowings	632582000	usd
CY2022Q4	us-gaap	Other Borrowings OtherBorrowings	264605000	usd
CY2023Q4	tcbk	Securities Sold Under Agreements To Collateralized SecuritiesSoldUnderAgreementsToCollateralized	32600000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	2500000000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	600000000	usd
CY2023Q4	tcbk	Loans Designated As Potential Collateral Under Collateralized Line Of Credit With Fhlb LoansDesignatedAsPotentialCollateralUnderCollateralizedLineOfCreditWithFhlb	69200000	usd
CY2023Q4	tcbk	Investment Securities Designated As Potential Collateral Under Collateral Line Of Credit With Fhlb InvestmentSecuritiesDesignatedAsPotentialCollateralUnderCollateralLineOfCreditWithFhlb	4600000000	usd
CY2023Q4	tcbk	Collateralized Line Of Credit With Federal Reserve Bank Maximum Borrowing Capacity CollateralizedLineOfCreditWithFederalReserveBankMaximumBorrowingCapacity	350000000	usd
CY2023Q4	tcbk	Collateralized Line Of Credit With Federal Reserve Bank Outstanding Balance CollateralizedLineOfCreditWithFederalReserveBankOutstandingBalance	0	usd
CY2023Q4	tcbk	Loans Designated As Potential Collateral Under Collateral Line Of Credit With Frb LoansDesignatedAsPotentialCollateralUnderCollateralLineOfCreditWithFrb	444500000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	30000000	usd
CY2023	tcbk	Number Of Subsidiary Business Trust NumberOfSubsidiaryBusinessTrust	5	trust
CY2023	tcbk	Debt Instrument Interest Deferral Period DebtInstrumentInterestDeferralPeriod	P5Y
CY2023	tcbk	Number Of Locations Organized NumberOfLocationsOrganized	2	location
CY2023Q4	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	101099000	usd
CY2022Q4	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	101040000	usd
CY2023	tcbk	Letter Of Credit Issue Period LetterOfCreditIssuePeriod	one year
CY2023	tcbk	Common Stock Conversion Ratio CommonStockConversionRatio	1.5875
CY2023	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	52800000	usd
CY2022	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	64200000	usd
CY2021	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	31600000	usd
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	78825	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.28
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2022	tcbk	Share Based Compensation Arrangements By Share Based Payment Award Options Outstanding Option Price Per Share Of Options Granted ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOutstandingOptionPricePerShareOfOptionsGranted	0
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	63325	shares
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	18.79
CY2022	tcbk	Share Based Compensation Arrangements By Share Based Payment Award Options Outstanding Option Price Per Share Of Options Forfeited ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOutstandingOptionPricePerShareOfOptionsForfeited	0
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	15500	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	21.27
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2023	tcbk	Share Based Compensation Arrangements By Share Based Payment Award Options Outstanding Option Price Per Share Of Options Granted ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOutstandingOptionPricePerShareOfOptionsGranted	0
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2023	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	8000	shares
CY2023	tcbk	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Option Price Per Share ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodOptionPricePerShare	19.46
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	19.46
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2023	tcbk	Share Based Compensation Arrangements By Share Based Payment Award Options Outstanding Option Price Per Share Of Options Forfeited ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOutstandingOptionPricePerShareOfOptionsForfeited	0
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2023Q4	tcbk	Share Based Compensation Arrangements By Share Based Payment Award Options Outstanding Option Price Per Share ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOutstandingOptionPricePerShare	23.21
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	23.21
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	7500	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	23.21
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	148000	usd
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P0Y9M18D
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	134000	usd
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1190000	usd
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	1476000	usd
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	0	usd
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	0	usd
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	0	usd
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	0	usd
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	0	usd
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	0	usd
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	40000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	0	usd
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	0	usd
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0	usd
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0	usd
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	0	usd
CY2023	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	50088000	usd
CY2022	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	49765000	usd
CY2021	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	43948000	usd
CY2023	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	4517000	usd
CY2022	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	3986000	usd
CY2021	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	3668000	usd
CY2023	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3150000	usd
CY2022	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2858000	usd
CY2021	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2775000	usd
CY2023	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1166000	usd
CY2022	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2342000	usd
CY2021	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	9580000	usd
CY2023	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	441000	usd
CY2022	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	820000	usd
CY2021	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	746000	usd
CY2023	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	1383000	usd
CY2022	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	1167000	usd
CY2021	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	459000	usd
CY2023	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-284000	usd
CY2022	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
CY2023	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	36000	usd
CY2022	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-340000	usd
CY2021	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-86000	usd
CY2023	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	903000	usd
CY2022	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	2448000	usd
CY2021	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	2574000	usd
CY2023	us-gaap	Noninterest Income Other NoninterestIncomeOther	11312000	usd
CY2022	us-gaap	Noninterest Income Other NoninterestIncomeOther	13281000	usd
CY2021	us-gaap	Noninterest Income Other NoninterestIncomeOther	19716000	usd
CY2023	us-gaap	Noninterest Income NoninterestIncome	61400000	usd
CY2022	us-gaap	Noninterest Income NoninterestIncome	63046000	usd
CY2021	us-gaap	Noninterest Income NoninterestIncome	63664000	usd
CY2023	tcbk	Change In Fair Value Of Mortgage Loan Servicing Rights ChangeInFairValueOfMortgageLoanServicingRights	1300000	usd
CY2022	tcbk	Change In Fair Value Of Mortgage Loan Servicing Rights ChangeInFairValueOfMortgageLoanServicingRights	2200000	usd
CY2021	tcbk	Change In Fair Value Of Mortgage Loan Servicing Rights ChangeInFairValueOfMortgageLoanServicingRights	1000000	usd
CY2023	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	94564000	usd
CY2022	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	84861000	usd
CY2021	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	69844000	usd
CY2023	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	15557000	usd
CY2022	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	17908000	usd
CY2021	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	14957000	usd
CY2023	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	25674000	usd
CY2022	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	27083000	usd
CY2021	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	21550000	usd
CY2023	tcbk	Labor And Related Expense Excluding Merger Related Costs LaborAndRelatedExpenseExcludingMergerRelatedCosts	135795000	usd
CY2022	tcbk	Labor And Related Expense Excluding Merger Related Costs LaborAndRelatedExpenseExcludingMergerRelatedCosts	129852000	usd
CY2021	tcbk	Labor And Related Expense Excluding Merger Related Costs LaborAndRelatedExpenseExcludingMergerRelatedCosts	106351000	usd
CY2023	us-gaap	Occupancy Net OccupancyNet	16135000	usd
CY2022	us-gaap	Occupancy Net OccupancyNet	15493000	usd
CY2021	us-gaap	Occupancy Net OccupancyNet	14910000	usd
CY2022	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	14660000	usd
CY2021	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	13985000	usd
CY2021	us-gaap	Equipment Expense EquipmentExpense	5358000	usd
CY2023	tcbk	Network Charges NetworkCharges	7080000	usd
CY2022	tcbk	Network Charges NetworkCharges	6984000	usd
CY2023	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
CY2022	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	6253000	usd
CY2021	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1523000	usd
CY2022	us-gaap	Advertising Expense AdvertisingExpense	3694000	usd
CY2021	us-gaap	Advertising Expense AdvertisingExpense	2899000	usd
CY2022	us-gaap	Professional Fees ProfessionalFees	4392000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6118000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6334000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5464000	usd
CY2023	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	5276000	usd
CY2023	tcbk	Courier Service CourierService	1851000	usd
CY2022	tcbk	Courier Service CourierService	2013000	usd
CY2021	tcbk	Courier Service CourierService	1214000	usd
CY2021	tcbk	Operational Losses OperationalLosses	964000	usd
CY2023	us-gaap	Postage Expense PostageExpense	1236000	usd
CY2022	us-gaap	Postage Expense PostageExpense	1147000	usd
CY2021	us-gaap	Postage Expense PostageExpense	710000	usd
CY2023	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-23000	usd
CY2023	tcbk	Other Operating Expenses OtherOperatingExpenses	19344000	usd
CY2022	tcbk	Other Operating Expenses OtherOperatingExpenses	15201000	usd
CY2023	tcbk	Other Noninterest Expense Excluding Merger Related Costs OtherNoninterestExpenseExcludingMergerRelatedCosts	97387000	usd
CY2022	tcbk	Other Noninterest Expense Excluding Merger Related Costs OtherNoninterestExpenseExcludingMergerRelatedCosts	86793000	usd
CY2021	tcbk	Other Noninterest Expense Excluding Merger Related Costs OtherNoninterestExpenseExcludingMergerRelatedCosts	71924000	usd
CY2023	us-gaap	Noninterest Expense NoninterestExpense	233182000	usd
CY2022	us-gaap	Noninterest Expense NoninterestExpense	216645000	usd
CY2021	us-gaap	Noninterest Expense NoninterestExpense	178275000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	26133000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	34155000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	28763000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	19781000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	22355000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	18221000	usd
CY2023	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	45914000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	56510000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	46984000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1330000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-5224000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-872000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1069000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2798000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-64000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2399000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-8022000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-936000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	43515000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	48488000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	46048000	usd
CY2023	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	10857000	usd
CY2022	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	6370000	usd
CY2021	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	4224000	usd
CY2023	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	9092000	usd
CY2022	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	6178000	usd
CY2021	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	3604000	usd
CY2023Q4	tcbk	Investment In Low Income Housing Tax Credit Funds InvestmentInLowIncomeHousingTaxCreditFunds	96900000	usd
CY2022Q4	tcbk	Investment In Low Income Housing Tax Credit Funds InvestmentInLowIncomeHousingTaxCreditFunds	91000000.0	usd
CY2023Q4	tcbk	Low Income Housing Tax Credit Fund Commitments LowIncomeHousingTaxCreditFundCommitments	63300000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.079
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.079
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.079
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.007
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.007
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.005
CY2023	tcbk	Effective Income Tax Rate Reconciliation Tax Exempt Life Insurance Related Income EffectiveIncomeTaxRateReconciliationTaxExemptLifeInsuranceRelatedIncome	0.004
CY2022	tcbk	Effective Income Tax Rate Reconciliation Tax Exempt Life Insurance Related Income EffectiveIncomeTaxRateReconciliationTaxExemptLifeInsuranceRelatedIncome	0.004
CY2021	tcbk	Effective Income Tax Rate Reconciliation Tax Exempt Life Insurance Related Income EffectiveIncomeTaxRateReconciliationTaxExemptLifeInsuranceRelatedIncome	0.005
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.066
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.037
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.026
CY2023	tcbk	Effective Income Tax Rate Reconciliation Low Income Housing Tax Credits Amortization EffectiveIncomeTaxRateReconciliationLowIncomeHousingTaxCreditsAmortization	0.056
CY2022	tcbk	Effective Income Tax Rate Reconciliation Low Income Housing Tax Credits Amortization EffectiveIncomeTaxRateReconciliationLowIncomeHousingTaxCreditsAmortization	0.036
CY2021	tcbk	Effective Income Tax Rate Reconciliation Low Income Housing Tax Credits Amortization EffectiveIncomeTaxRateReconciliationLowIncomeHousingTaxCreditsAmortization	0.022
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.003
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.002
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.001
CY2023	tcbk	Effective Income Tax Rate Reconciliation Nondeductible Expense Merger Expenses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMergerExpenses	0
CY2022	tcbk	Effective Income Tax Rate Reconciliation Nondeductible Expense Merger Expenses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMergerExpenses	0.001
CY2021	tcbk	Effective Income Tax Rate Reconciliation Nondeductible Expense Merger Expenses EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMergerExpenses	0.001
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.001
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.006
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.270
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.279
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.281
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	37656000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	32519000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	1534000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	1696000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	3899000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	2720000	usd
CY2023Q4	tcbk	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Additional Minimum Pension Liability DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsAdditionalMinimumPensionLiability	15434000	usd
CY2022Q4	tcbk	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Additional Minimum Pension Liability DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsAdditionalMinimumPensionLiability	16036000	usd
CY2023Q4	tcbk	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	8355000	usd
CY2022Q4	tcbk	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	8575000	usd
CY2023Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	3346000	usd
CY2022Q4	us-gaap	Deferred Tax Assets State Taxes DeferredTaxAssetsStateTaxes	3649000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1050000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1132000	usd
CY2023Q4	tcbk	Deferred Tax Assets Nonaccrual Interest DeferredTaxAssetsNonaccrualInterest	706000	usd
CY2022Q4	tcbk	Deferred Tax Assets Nonaccrual Interest DeferredTaxAssetsNonaccrualInterest	643000	usd
CY2023Q4	tcbk	Deferred Tax Assets Acquisition Cost Basis DeferredTaxAssetsAcquisitionCostBasis	12046000	usd
CY2022Q4	tcbk	Deferred Tax Assets Acquisition Cost Basis DeferredTaxAssetsAcquisitionCostBasis	14640000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	68535000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	85897000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	852000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	852000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	953000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	2098000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	190000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	120000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	154556000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	170577000	usd
CY2023Q4	tcbk	Deferred Tax Liabilities Securities Income DeferredTaxLiabilitiesSecuritiesIncome	777000	usd
CY2022Q4	tcbk	Deferred Tax Liabilities Securities Income DeferredTaxLiabilitiesSecuritiesIncome	777000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8364000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8270000	usd
CY2023Q4	tcbk	Deferred Tax Liability Right Of Use Asset DeferredTaxLiabilityRightOfUseAsset	7726000	usd
CY2022Q4	tcbk	Deferred Tax Liability Right Of Use Asset DeferredTaxLiabilityRightOfUseAsset	7941000	usd
CY2023Q4	tcbk	Deferred Tax Liabilities Funded Pension Liability DeferredTaxLiabilitiesFundedPensionLiability	3999000	usd
CY2022Q4	tcbk	Deferred Tax Liabilities Funded Pension Liability DeferredTaxLiabilitiesFundedPensionLiability	4110000	usd
CY2023Q4	tcbk	Deferred Tax Liabilities Securities Accretion DeferredTaxLiabilitiesSecuritiesAccretion	2265000	usd
CY2022Q4	tcbk	Deferred Tax Liabilities Securities Accretion DeferredTaxLiabilitiesSecuritiesAccretion	1265000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	1946000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	1976000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	2814000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	4778000	usd
CY2023Q4	tcbk	Deferred Tax Liabilities Junior Subordinated Debt DeferredTaxLiabilitiesJuniorSubordinatedDebt	1171000	usd
CY2022Q4	tcbk	Deferred Tax Liabilities Junior Subordinated Debt DeferredTaxLiabilitiesJuniorSubordinatedDebt	1293000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	1170000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	991000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	30232000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	31401000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	124324000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	139176000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	2736000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	2736000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	2906000	usd
CY2023Q4	tcbk	Defined Benefit Plan Estimated Future Employer Contributions In Year Two DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearTwo	2906000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	117390000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	125419000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	117655000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33261000	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32584000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	29721000	shares
CY2023	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	94000	shares
CY2022	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	137000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	161000	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33355000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32721000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	29882000	shares
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2023	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	-284000	usd
CY2022	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	0	usd
CY2021	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	40736000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-194886000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-11299000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-153169000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-193905000	usd
CY2023	tcbk	Employee Service Period Under Esop EmployeeServicePeriodUnderEsop	P1Y
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	2895000	usd
CY2023Q4	tcbk	Defined Benefit Plan Estimated Future Employer Contributions In Year Three DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearThree	2895000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	2916000	usd
CY2023	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	3075000	usd
CY2022	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	2824000	usd
CY2021	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	1888000	usd
CY2023	us-gaap	Employee Stock Ownership Plan Esop Cash Contributions To Esop EmployeeStockOwnershipPlanESOPCashContributionsToESOP	2977000	usd
CY2022	us-gaap	Employee Stock Ownership Plan Esop Cash Contributions To Esop EmployeeStockOwnershipPlanESOPCashContributionsToESOP	3535000	usd
CY2021	us-gaap	Employee Stock Ownership Plan Esop Cash Contributions To Esop EmployeeStockOwnershipPlanESOPCashContributionsToESOP	878000	usd
CY2023Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	5200000	usd
CY2022Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	5700000	usd
CY2023	tcbk	Deferred Compensation Arrangements Non Interest Expense DeferredCompensationArrangementsNonInterestExpense	210000	usd
CY2022	tcbk	Deferred Compensation Arrangements Non Interest Expense DeferredCompensationArrangementsNonInterestExpense	187000	usd
CY2021	tcbk	Deferred Compensation Arrangements Non Interest Expense DeferredCompensationArrangementsNonInterestExpense	176000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-13500000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-13900000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-500000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Transition Assets Obligations Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetTransitionAssetsObligationsBeforeTax	0	usd
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Transition Assets Obligations Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetTransitionAssetsObligationsBeforeTax	0	usd
CY2023Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	0	usd
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	0	usd
CY2023Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	13527000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	13901000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-13527000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-13901000	usd
CY2023Q4	tcbk	Defined Benefit Plan Accumulated Other Comprehensive Income Deferred Income Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeDeferredIncomeTax	-3999000	usd
CY2022Q4	tcbk	Defined Benefit Plan Accumulated Other Comprehensive Income Deferred Income Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeDeferredIncomeTax	-4109000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-9528000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-9792000	usd
CY2023Q4	tcbk	Defined Benefit Plan Estimated Future Employer Contributions In Year Four DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearFour	2916000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	2885000	usd
CY2023Q4	tcbk	Defined Benefit Plan Estimated Future Employer Contributions In Year Five DefinedBenefitPlanEstimatedFutureEmployerContributionsInYearFive	2885000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	18580000	usd
CY2023Q4	tcbk	Defined Benefit Plan Estimated Future Employer Contributions Five Fiscal Years Thereafter DefinedBenefitPlanEstimatedFutureEmployerContributionsFiveFiscalYearsThereafter	18580000	usd
CY2023	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	0	usd
CY2022Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	40341000	usd
CY2021Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	43834000	usd
CY2023	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Benefit Obligation DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation	0	usd
CY2022	us-gaap	Defined Benefit Plan Business Combinations And Acquisitions Benefit Obligation DefinedBenefitPlanBusinessCombinationsAndAcquisitionsBenefitObligation	3310000	usd
CY2023	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	138000	usd
CY2022	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1624000	usd
CY2023	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	2016000	usd
CY2022	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1731000	usd
CY2023	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	81000	usd
CY2022	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	10266000	usd
CY2023	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	0	usd
CY2022	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	-2141000	usd
CY2023	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	3769000	usd
CY2022	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	2033000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	38645000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	40341000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	usd
CY2022Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	usd
CY2023Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	usd
CY2022Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	usd
CY2023Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-38645000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-40341000	usd
CY2023Q4	tcbk	Defined Benefit Plan Net Transition Obligations Assets Not Yet Recognized DefinedBenefitPlanNetTransitionObligationsAssetsNotYetRecognized	0	usd
CY2022Q4	tcbk	Defined Benefit Plan Net Transition Obligations Assets Not Yet Recognized DefinedBenefitPlanNetTransitionObligationsAssetsNotYetRecognized	0	usd
CY2023Q4	tcbk	Defined Benefit Plan Net Actuarial Gains Losses Not Yet Recognized DefinedBenefitPlanNetActuarialGainsLossesNotYetRecognized	-13527000	usd
CY2022Q4	tcbk	Defined Benefit Plan Net Actuarial Gains Losses Not Yet Recognized DefinedBenefitPlanNetActuarialGainsLossesNotYetRecognized	-13901000	usd
CY2023Q4	tcbk	Defined Benefit Plan Net Prior Service Costs Credits Not Yet Recognized DefinedBenefitPlanNetPriorServiceCostsCreditsNotYetRecognized	0	usd
CY2022Q4	tcbk	Defined Benefit Plan Net Prior Service Costs Credits Not Yet Recognized DefinedBenefitPlanNetPriorServiceCostsCreditsNotYetRecognized	0	usd
CY2023Q4	tcbk	Defined Benefit Plan Accumulated Other Comprehensive Income Loss Minimum Pension Liability Before Tax1 DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeLossMinimumPensionLiabilityBeforeTax1	-13527000	usd
CY2022Q4	tcbk	Defined Benefit Plan Accumulated Other Comprehensive Income Loss Minimum Pension Liability Before Tax1 DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeLossMinimumPensionLiabilityBeforeTax1	-13901000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-38645000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-40341000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	38645000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	40341000	usd
CY2022	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	4234000	usd
CY2021	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	0	usd
CY2023	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	138000	usd
CY2022	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1624000	usd
CY2021	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1103000	usd
CY2023	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	2016000	usd
CY2022	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1731000	usd
CY2021	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1518000	usd
CY2023	us-gaap	Defined Benefit Plan Amortization Of Transition Asset Obligation DefinedBenefitPlanAmortizationOfTransitionAssetObligation	0	usd
CY2022	us-gaap	Defined Benefit Plan Amortization Of Transition Asset Obligation DefinedBenefitPlanAmortizationOfTransitionAssetObligation	0	usd
CY2021	us-gaap	Defined Benefit Plan Amortization Of Transition Asset Obligation DefinedBenefitPlanAmortizationOfTransitionAssetObligation	0	usd
CY2023	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	0	usd
CY2022	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-28000	usd
CY2021	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-58000	usd
CY2023	us-gaap	Defined Benefit Plan Actuarial Gain Loss Immediate Recognition As Component In Net Periodic Benefit Cost Credit DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit	-10000	usd
CY2022	us-gaap	Defined Benefit Plan Actuarial Gain Loss Immediate Recognition As Component In Net Periodic Benefit Cost Credit DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit	86000	usd
CY2021	us-gaap	Defined Benefit Plan Actuarial Gain Loss Immediate Recognition As Component In Net Periodic Benefit Cost Credit DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit	-254000	usd
CY2023	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	466000	usd
CY2022	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	114000	usd
CY2021	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	0	usd
CY2023	tcbk	Defined Benefit Plan Recognition Of Pension Service Cost Credit Due To Amendment DefinedBenefitPlanRecognitionOfPensionServiceCostCreditDueToAmendment	0	usd
CY2022	tcbk	Defined Benefit Plan Recognition Of Pension Service Cost Credit Due To Amendment DefinedBenefitPlanRecognitionOfPensionServiceCostCreditDueToAmendment	2141000	usd
CY2021	tcbk	Defined Benefit Plan Recognition Of Pension Service Cost Credit Due To Amendment DefinedBenefitPlanRecognitionOfPensionServiceCostCreditDueToAmendment	0	usd
CY2023	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	1698000	usd
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	5268000	usd
CY2021	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	2817000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0501
CY2022Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0523
CY2021Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0274
CY2023	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0523
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0274
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0240
CY2023Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	29700000	usd
CY2022Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	28400000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Restricted EquitySecuritiesFvNiRestricted	0	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Restricted EquitySecuritiesFvNiRestricted	0	usd
CY2022Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	6712000	usd
CY2023	tcbk	Losses From Fair Value Adjustments Assets And Liabilities LossesFromFairValueAdjustmentsAssetsAndLiabilities	4810000	usd
CY2022	tcbk	Losses From Fair Value Adjustments Assets And Liabilities LossesFromFairValueAdjustmentsAssetsAndLiabilities	1802000	usd
CY2023Q4	tcbk	Loan Charged Off Carrying Value LoanChargedOffCarryingValue	0	usd
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2023Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	33268102	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	33268102	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	33331513	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	33331513	shares

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$TCBK
Trico Bancshares Stock $tcbk

2024 Q1 Form 10-K Financial Statement

#000035617124000012 Filed on February 29, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBK Trico Bancshares Stock $tcbk

2024 Q1 Form 10-K Financial Statement

#000035617124000012 Filed on February 29, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBK
Trico Bancshares Stock $tcbk