$TCBK
TRICO BANCSHARES / Stock $tcbk

$tcbk Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-Q Financial Statement

#000035617124000133 Filed on November 07, 2024

Income Statement

Concept	2024 Q4	2024 Q3
Revenue		$12.78M
YoY Change		-2.24%
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		$2.592M
YoY Change		-19.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income		$39.40M
YoY Change		-6.36%
Income Tax		$10.35M
% Of Pretax Income		26.26%
Net Earnings		$29.05M
YoY Change		-5.03%
Net Earnings / Revenue		227.28%
Basic Earnings Per Share		$0.88
Diluted Earnings Per Share		$0.88
COMMON SHARES
Basic Shares Outstanding	33.01M shares	32.99M shares
Diluted Shares Outstanding		33.14M shares

Balance Sheet

Concept	2024 Q4	2024 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents		$320.1M
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		$95.14M
YoY Change		32.58%
Goodwill		$304.4M
YoY Change		0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets		$9.824B
YoY Change		-0.74%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable		$11.66M
YoY Change		66.63%
Accrued Expenses		$26.67M
YoY Change		-11.11%
Deferred Revenue
YoY Change
Short-Term Debt		$266.8M
YoY Change		-50.42%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities		$305.1M
YoY Change		-46.94%
LONG-TERM LIABILITIES
Long-Term Debt		$101.2M
YoY Change		0.16%
Other Long-Term Liabilities		$141.5M
YoY Change		-0.34%
Total Long-Term Liabilities		$242.7M
YoY Change		-0.13%
TOTAL LIABILITIES
Total Short-Term Liabilities		$305.1M
Total Long-Term Liabilities		$242.7M
Total Liabilities		$8.585B
YoY Change		-2.74%
SHAREHOLDERS EQUITY
Retained Earnings		$662.8M
YoY Change		10.57%
Common Stock		$693.2M
YoY Change		-0.46%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity		$1.239B
YoY Change
Total Liabilities & Shareholders Equity		$9.824B
YoY Change		-0.74%

Cashflow Statement

Concept	2024 Q4	2024 Q3
OPERATING ACTIVITIES
Net Income		$29.05M
YoY Change		-5.03%
Depreciation, Depletion And Amortization		$2.592M
YoY Change		-19.0%
Cash From Operating Activities		$28.58M
YoY Change		-38.15%
INVESTING ACTIVITIES
Capital Expenditures		$1.240M
YoY Change		77.14%
Acquisitions
YoY Change
Other Investing Activities		$91.14M
YoY Change		-188.66%
Cash From Investing Activities		$89.90M
YoY Change		-186.95%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities		-4.925M
YoY Change		-109.95%
NET CHANGE
Cash From Operating Activities		28.58M
Cash From Investing Activities		89.90M
Cash From Financing Activities		-4.925M
Net Change In Cash		113.6M
YoY Change		-1574.75%
FREE CASH FLOW
Cash From Operating Activities		$28.58M
Capital Expenditures		$1.240M
Free Cash Flow		$27.34M
YoY Change		-39.92%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Registrant Name EntityRegistrantName	TriCo Bancshares
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Entity Central Index Key EntityCentralIndexKey	0000356171
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	CA
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	94-2792841
	dei	Entity Address Address Line1 EntityAddressAddressLine1	63 Constitution Drive
CY2024Q3	tcbk	Cash At Federal Reserve And Other Banks CashAtFederalReserveAndOtherBanks	209973000	usd
CY2023Q4	tcbk	Cash At Federal Reserve And Other Banks CashAtFederalReserveAndOtherBanks	17075000	usd
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	320114000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	98701000	usd
CY2024Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	2690000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	2634000	usd
CY2024Q3	us-gaap	Restricted Investments RestrictedInvestments	17250000	usd
CY2023Q4	us-gaap	Restricted Investments RestrictedInvestments	17250000	usd
CY2024Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	1995000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	458000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6683891000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6794470000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	123760000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	121522000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	6560131000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	6672948000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	70423000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	71347000	usd
CY2024Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	139312000	usd
CY2023Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	136892000	usd
CY2024Q3	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	33061000	usd
CY2023Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	36768000	usd
CY2024Q3	us-gaap	Goodwill Goodwill	304442000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	304442000	usd
CY2024Q3	tcbk	Core Deposit Intangible CoreDepositIntangible	7462000	usd
CY2023Q4	tcbk	Core Deposit Intangible CoreDepositIntangible	10552000	usd
CY2024Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	24716000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	26133000	usd
CY2024Q3	us-gaap	Other Assets OtherAssets	245765000	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	245966000	usd
CY2024Q3	us-gaap	Assets Assets	9823890000	usd
CY2023Q4	us-gaap	Assets Assets	9910089000	usd
CY2024Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2547736000	usd
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2722689000	usd
CY2024Q3	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	5489355000	usd
CY2023Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	5111349000	usd
CY2023Q4	us-gaap	Deposits Deposits	7834038000	usd
CY2024Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	11664000	usd
CY2023Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	8445000	usd
CY2024Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	26668000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	28261000	usd
CY2024Q3	us-gaap	Other Liabilities OtherLiabilities	141521000	usd
CY2023Q4	us-gaap	Other Liabilities OtherLiabilities	145982000	usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2024Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2024Q3	us-gaap	Common Stock Value CommonStockValue	693176000	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	697349000	usd
CY2024Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	662816000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	615502000	usd
CY2024Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-116977000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-153169000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	1239015000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1159682000	usd
CY2024Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9823890000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	9910089000	usd
CY2024Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	98085000	usd
CY2023Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	91707000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	50878000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	55746000	usd
CY2024Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	897000	usd
CY2023Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1350000	usd
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	2729000	usd
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	3920000	usd
CY2024Q3	us-gaap	Dividend Income Operating DividendIncomeOperating	376000	usd
CY2023Q3	us-gaap	Dividend Income Operating DividendIncomeOperating	333000	usd
	us-gaap	Dividend Income Operating DividendIncomeOperating	1143000	usd
	us-gaap	Dividend Income Operating DividendIncomeOperating	935000	usd
CY2024Q3	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	1177000	usd
CY2023Q3	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	333000	usd
	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	2247000	usd
	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	976000	usd
CY2024Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	117347000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	112380000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	349796000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	322445000	usd
CY2024Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	30688000	usd
CY2023Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	17379000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	83238000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	33981000	usd
CY2024Q3	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	2144000	usd
CY2023Q3	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	5106000	usd
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	13640000	usd
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	13318000	usd
CY2024Q3	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	1904000	usd
CY2023Q3	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	1772000	usd
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	5574000	usd
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	5086000	usd
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	88123000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	247344000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	270060000	usd
CY2024Q3	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	220000	usd
CY2023Q3	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	4155000	usd
	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	4930000	usd
	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	18000000	usd
CY2024Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	82391000	usd
CY2023Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	83968000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	242414000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	252060000	usd
CY2024Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	12782000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	13075000	usd
CY2023Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	1141000	usd
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	3989000	usd
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	3233000	usd
CY2024Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	786000	usd
CY2023Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	684000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2420000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2274000	usd
CY2024Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	874000	usd
CY2023Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	702000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2353000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1894000	usd
CY2024Q3	us-gaap	Noninterest Income NoninterestIncome	16495000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	15984000	usd
	us-gaap	Noninterest Income NoninterestIncome	48132000	usd
	us-gaap	Noninterest Income NoninterestIncome	45360000	usd
CY2024Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	35550000	usd
CY2023Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	34463000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	105255000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	101740000	usd
CY2024Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	23937000	usd
CY2023Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	23415000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	69075000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	71175000	usd
CY2024Q3	us-gaap	Noninterest Expense NoninterestExpense	59487000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	57878000	usd
	us-gaap	Noninterest Expense NoninterestExpense	174330000	usd
	us-gaap	Noninterest Expense NoninterestExpense	172915000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	39399000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	116216000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	124505000	usd
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10348000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30382000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	33190000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	30590000	usd
	us-gaap	Net Income Loss NetIncomeLoss	85834000	usd
	us-gaap	Net Income Loss NetIncomeLoss	91315000	usd
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.88
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.92
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.58
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.74
CY2024Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.33
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.99
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.90
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	29051000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	30590000	usd
	us-gaap	Net Income Loss NetIncomeLoss	85834000	usd
	us-gaap	Net Income Loss NetIncomeLoss	91315000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	44538000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-44040000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	36192000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-31511000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	usd
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	usd
CY2024Q3	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax	0	usd
CY2023Q3	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax	0	usd
	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax	0	usd
	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax	0	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	44538000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-44040000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	36192000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-31511000	usd
CY2024Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	73589000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-13450000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	122026000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	59804000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	1092781000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	30590000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-44040000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3250000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3885000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	320114000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	111099000	usd
	dei	Entity File Number EntityFileNumber	000-10661
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity Address City Or Town EntityAddressCityOrTown	Chico
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	95973
	dei	City Area Code CityAreaCode	530
	dei	Local Phone Number LocalPhoneNumber	898-0300
	dei	Security12b Title Security12bTitle	Common Stock
	dei	Trading Symbol TradingSymbol	TCBK
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2024Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	33005380	shares
CY2024Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	110141000	usd
CY2023Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	81626000	usd
CY2024Q3	us-gaap	Deposits Deposits	8037091000	usd
CY2024Q3	us-gaap	Other Borrowings OtherBorrowings	266767000	usd
CY2023Q4	us-gaap	Other Borrowings OtherBorrowings	632582000	usd
CY2024Q3	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	101164000	usd
CY2023Q4	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	101099000	usd
CY2024Q3	us-gaap	Liabilities Liabilities	8584875000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	8750407000	usd
CY2024Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2024Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2024Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2024Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
CY2024Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	33000508	shares
CY2024Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	33000508	shares
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	292799000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	260868000	usd
CY2024Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	16812000	usd
CY2023Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	18657000	usd
CY2024Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	82611000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	38215000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	37240000	usd
CY2024Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	549000	usd
CY2023Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	382000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1198000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	883000	usd
CY2024Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	2000	usd
CY2023Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-43000	usd
CY2024Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	1502000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	42074000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	29051000	usd
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.59
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.75
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.92
CY2023Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	9979000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	1070401000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	1175050000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	29051000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	44538000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	9108000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	29921000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	1070401000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1159682000	usd
	us-gaap	Net Income Loss NetIncomeLoss	85834000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	36192000	usd
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	174000	usd
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	2428000	usd
	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	1122000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	13651000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	32766000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	1239015000	usd
	us-gaap	Profit Loss ProfitLoss	85834000	usd
	us-gaap	Profit Loss ProfitLoss	91315000	usd
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	4562000	usd
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	4829000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3090000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4902000	usd
	tcbk	Provision For Benefit From Provisions For Credit Losses ProvisionForBenefitFromProvisionsForCreditLosses	4670000	usd
	tcbk	Provision For Benefit From Provisions For Credit Losses ProvisionForBenefitFromProvisionsForCreditLosses	16415000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-511000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-433000	usd
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-43000	usd
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-164000	usd
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	48197000	usd
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	33389000	usd
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	47476000	usd
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	35179000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1198000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	883000	usd
	tcbk	Change In Market Value Of Mortgage Servicing Rights ChangeInMarketValueOfMortgageServicingRights	468000	usd
	tcbk	Change In Market Value Of Mortgage Servicing Rights ChangeInMarketValueOfMortgageServicingRights	215000	usd
	tcbk	Provision For Benefit From Losses On Foreclosed Assets ProvisionForBenefitFromLossesOnForeclosedAssets	679000	usd
	tcbk	Gain On Transfer Of Loans To Foreclosed Assets GainOnTransferOfLoansToForeclosedAssets	38000	usd
	tcbk	Gain On Transfer Of Loans To Foreclosed Assets GainOnTransferOfLoansToForeclosedAssets	114000	usd
	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans GainLossOnForeclosedAssetsExcludingTransferOfLoans	-26000	usd
	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans GainLossOnForeclosedAssetsExcludingTransferOfLoans	38000	usd
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-81000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	3550000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	3054000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	2739000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	3219000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	5521000	usd
	tcbk	Increase Decrease In Amortization Of Operating Lease Right Of Use Asset IncreaseDecreaseInAmortizationOfOperatingLeaseRightOfUseAsset	4481000	usd
	tcbk	Increase Decrease In Amortization Of Operating Lease Right Of Use Asset IncreaseDecreaseInAmortizationOfOperatingLeaseRightOfUseAsset	4861000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-21016000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	85467000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	102377000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	315627000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	243245000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	16074000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	21754000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	31534000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	24160000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	122873000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	34468000	usd
	tcbk	Payment For Loan And Lease Originations And Principal Collections PaymentForLoanAndLeaseOriginationsAndPrincipalCollections	-107690000	usd
	tcbk	Payment For Loan And Lease Originations And Principal Collections PaymentForLoanAndLeaseOriginationsAndPrincipalCollections	258183000	usd
	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	0	usd
	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	6423000	usd
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	149000	usd
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	165000	usd
CY2024Q3	tcbk	Financing Receivable Nonaccrual Including Guaranteed Loans FinancingReceivableNonaccrualIncludingGuaranteedLoans	41551000	usd
CY2024Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	86000	usd
CY2024Q3	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	500000	usd
	dei	Document Period End Date DocumentPeriodEndDate	2024-09-30
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-164000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	728000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	98701000	usd
	tcbk	Loans Transferred To Foreclosed Assets LoansTransferredToForeclosedAssets	458000	usd
	tcbk	Loans Transferred To Foreclosed Assets LoansTransferredToForeclosedAssets	105000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	13916000	usd
	us-gaap	Equipment Expense EquipmentExpense	4060000	usd
	us-gaap	Equipment Expense EquipmentExpense	4322000	usd
	us-gaap	Advertising Expense AdvertisingExpense	2656000	usd
CY2024Q3	us-gaap	Professional Fees ProfessionalFees	1893000	usd
CY2024Q3	us-gaap	Communication Communication	507000	usd
CY2023Q3	us-gaap	Communication Communication	567000	usd
	us-gaap	Communication Communication	1576000	usd
CY2024Q3	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	1256000	usd
CY2023Q3	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	1194000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2384325000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1979270000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2152504000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2024Q3	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
	us-gaap	Interest Expense Operating InterestExpenseOperating	52385000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	4840000	usd
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-12000	usd
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-22000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2420000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2274000	usd
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	121000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-3707000	usd
CY2024Q2	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	6210000	usd
CY2024Q2	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	129727000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	121522000	usd
CY2023Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	5850000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	105680000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	4315000	usd
CY2022Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	109995000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	117329000	usd
CY2023Q2	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	4865000	usd
CY2023Q2	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	122194000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	105680000	usd
CY2022Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	4315000	usd
CY2022Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	109995000	usd
CY2023Q3	tcbk	Loans Receivable Impaired Interest Lost On Nonaccrual Loans LoansReceivableImpairedInterestLostOnNonaccrualLoans	400000	usd
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2024Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2159708000	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	117259000	usd
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	33268102	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	33268102	shares
CY2024Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	34736000	usd
CY2023Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	24257000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	102452000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11484000	usd
CY2023Q3	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	355000	usd
CY2023Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	34000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	174000	usd
CY2024Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	809000	usd
CY2024Q3	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	348000	usd
CY2024Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	67000	usd
CY2024Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	10888000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	1239015000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1046416000	usd
	us-gaap	Net Income Loss NetIncomeLoss	91315000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-31511000	usd
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	156000	usd
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	2082000	usd
	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	972000	usd
	tcbk	Provision For Benefit From Losses On Foreclosed Assets ProvisionForBenefitFromLossesOnForeclosedAssets	0	usd
	tcbk	Increase Decrease In The Market Value Of Foreclosed Assets IncreaseDecreaseInTheMarketValueOfForeclosedAssets	262000	usd
	tcbk	Increase Decrease In The Market Value Of Foreclosed Assets IncreaseDecreaseInTheMarketValueOfForeclosedAssets	0	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	4658000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-19812000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	344951000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-13635000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	203053000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-319370000	usd
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-365815000	usd
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	273370000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	13651000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	9108000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	32766000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	29921000	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	174000	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	156000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-209005000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-84873000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	221413000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	3869000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	107230000	usd
	tcbk	Unrealized Gain Loss On Securities Available For Sale UnrealizedGainLossOnSecuritiesAvailableForSale	51383000	usd
	tcbk	Unrealized Gain Loss On Securities Available For Sale UnrealizedGainLossOnSecuritiesAvailableForSale	-44738000	usd
	tcbk	Market Value Of Shares Tendered By Employees In Lieu Of Cash To Pay For Exercise Of Options And Or Related Taxes MarketValueOfSharesTenderedByEmployeesInLieuOfCashToPayForExerciseOfOptionsAndOrRelatedTaxes	1168000	usd
	tcbk	Market Value Of Shares Tendered By Employees In Lieu Of Cash To Pay For Exercise Of Options And Or Related Taxes MarketValueOfSharesTenderedByEmployeesInLieuOfCashToPayForExerciseOfOptionsAndOrRelatedTaxes	2134000	usd
	tcbk	Obligations Incurred Leased Assets ObligationsIncurredLeasedAssets	2226000	usd
	tcbk	Obligations Incurred Leased Assets ObligationsIncurredLeasedAssets	4311000	usd
	us-gaap	Interest Paid Net InterestPaidNet	99233000	usd
	us-gaap	Interest Paid Net InterestPaidNet	46864000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	27200000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	39800000	usd
	tcbk	Number Of Subsidiary Business Trust NumberOfSubsidiaryBusinessTrust	5	trust
CY2024Q3	tcbk	Number Of Loan Production Offices NumberOfLoanProductionOffices	2	trust
CY2024Q3	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	1800000	usd
	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:12pt"><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><div style="margin-top:6pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 (the “2023 Annual Report”). The Company believes that the disclosures made are adequate to make the information not misleading.</span></div>
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:12pt"><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>
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-top:12pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:115%">Reclassification</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%">Some items in the prior year consolidated financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior year net income or shareholders’ equity.</span></div>
	tcbk	Nonaccrual Status Loans Contractual Past Due NonaccrualStatusLoansContractualPastDue	P90D
CY2024Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2159708000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1099000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	181537000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1979270000	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	117259000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	10000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	5282000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	111987000	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	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
	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	28600000	usd
	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	24200000	usd
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-2900000	usd
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-200000	usd
CY2023Q3	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	0	usd
CY2024Q3	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	0	usd
CY2024Q3	tcbk	Securities Pledged As Collateral SecuritiesPledgedAsCollateral	761600000	usd
CY2023Q4	tcbk	Securities Pledged As Collateral SecuritiesPledgedAsCollateral	702200000	usd
CY2024Q3	us-gaap	Us Government Agencies Securities At Carrying Value USGovernmentAgenciesSecuritiesAtCarryingValue	1300000000	usd
	tcbk	Life Of Mortgage Backed Securities LifeOfMortgageBackedSecurities	P6Y8M1D
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	6625000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	6421000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	1137000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	1143000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	62174000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	60553000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	3453000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	3361000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	239924000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	231415000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	87693000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	83990000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1850985000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1680881000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	24976000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	23493000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2159708000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1979270000	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	117259000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	111987000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	107517000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	165000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1667772000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	181372000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1775289000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	181537000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	506000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	3000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	110173000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	5279000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	110679000	usd
CY2024Q3	tcbk	Debt Securities Held To Maturity Unrealized Accumulated Loss DebtSecuritiesHeldToMaturityUnrealizedAccumulatedLoss	5282000	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
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6683891000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6794470000	usd
CY2024Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	6720629000	usd
CY2023Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	6834935000	usd
CY2024Q3	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	15298000	usd
CY2023Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	15826000	usd
CY2024Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-21440000	usd
CY2023Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-24639000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6683891000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6794470000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	123760000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	121522000	usd
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	123517000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	444000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	367000	usd
CY2024Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	320000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	123760000	usd
CY2024Q3	tcbk	Off Balance Sheet Credit Loss Writeoff OffBalanceSheetCreditLossWriteoff	0	usd
CY2024Q3	tcbk	Off Balance Sheet Credit Loss Recovery OffBalanceSheetCreditLossRecovery	0	usd
CY2024Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-100000	usd
CY2024Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	6110000	usd
CY2024Q3	tcbk	Credit Loss Allowance For Credit Loss Writeoff CreditLossAllowanceForCreditLossWriteoff	444000	usd
CY2024Q3	tcbk	Credit Loss Allowance For Credit Loss Recovery CreditLossAllowanceForCreditLossRecovery	367000	usd
CY2024Q3	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	220000	usd
CY2024Q3	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	129870000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	3329000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	897000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	4670000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	123760000	usd
	tcbk	Off Balance Sheet Credit Loss Writeoff OffBalanceSheetCreditLossWriteoff	0	usd
	tcbk	Off Balance Sheet Credit Loss Recovery OffBalanceSheetCreditLossRecovery	0	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	260000	usd
CY2024Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	6110000	usd
CY2023Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	127372000	usd
	tcbk	Credit Loss Allowance For Credit Loss Writeoff CreditLossAllowanceForCreditLossWriteoff	3329000	usd
	tcbk	Credit Loss Allowance For Credit Loss Recovery CreditLossAllowanceForCreditLossRecovery	897000	usd
	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	4930000	usd
CY2024Q3	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	129870000	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
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
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
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	5357000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	720000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	3120000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	115812000	usd
CY2023Q3	tcbk	Off Balance Sheet Credit Loss Writeoff OffBalanceSheetCreditLossWriteoff	0	usd
CY2023Q3	tcbk	Off Balance Sheet Credit Loss Recovery OffBalanceSheetCreditLossRecovery	0	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	1035000	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	5900000	usd
CY2023Q3	tcbk	Credit Loss Allowance For Credit Loss Writeoff CreditLossAllowanceForCreditLossWriteoff	5357000	usd
CY2023Q3	tcbk	Credit Loss Allowance For Credit Loss Recovery CreditLossAllowanceForCreditLossRecovery	720000	usd
CY2023Q3	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	4155000	usd
CY2023Q3	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	121712000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	7391000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1108000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	16415000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	115812000	usd
	tcbk	Off Balance Sheet Credit Loss Writeoff OffBalanceSheetCreditLossWriteoff	0	usd
	tcbk	Off Balance Sheet Credit Loss Recovery OffBalanceSheetCreditLossRecovery	0	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	1585000	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	5900000	usd
	tcbk	Credit Loss Allowance For Credit Loss Writeoff CreditLossAllowanceForCreditLossWriteoff	7391000	usd
	tcbk	Credit Loss Allowance For Credit Loss Recovery CreditLossAllowanceForCreditLossRecovery	1108000	usd
	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	18000000	usd
CY2023Q3	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	121712000	usd
CY2024Q3	tcbk	Financing Receivable Threshold For Loan Analysis FinancingReceivableThresholdForLoanAnalysis	1000000	usd
CY2024Q3	tcbk	Financing Receivable Threshold For Loan Analysis FinancingReceivableThresholdForLoanAnalysis	1000000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	325596000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	616411000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	1215820000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	1151234000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	535482000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	1830833000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	996779000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	11736000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	6683891000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	471000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	93000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	367000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	167000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	28000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	56000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	2147000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	0	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	3329000	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
CY2024Q3	tcbk	Financing Receivable Nonccrual No Allowance Including Guaranteed Loans FinancingReceivableNonccrualNoAllowanceIncludingGuaranteedLoans	32223000	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
CY2024Q3	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	31371000	usd
CY2024Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	41551000	usd
CY2024Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	86000	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
CY2024Q3	tcbk	Loans Receivable Impaired Interest Lost On Nonaccrual Loans LoansReceivableImpairedInterestLostOnNonaccrualLoans	1600000	usd
CY2023Q3	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	100000	usd
	tcbk	Loans Receivable Impaired Interest Lost On Nonaccrual Loans LoansReceivableImpairedInterestLostOnNonaccrualLoans	3000000.0	usd
	tcbk	Loans Receivable Impaired Interest Lost On Nonaccrual Loans LoansReceivableImpairedInterestLostOnNonaccrualLoans	1700000	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	600000	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	800000	usd
CY2024Q3	tcbk	Payment Combination Extension Amount PaymentCombinationExtensionAmount	0	usd
CY2024Q3	tcbk	Payment Delay Extension Amount PaymentDelayExtensionAmount	326000	usd
CY2024Q3	us-gaap	Financing Receivable Modification To Total Financing Receivables Excluding Accrued Interest Percent FinancingReceivableModificationToTotalFinancingReceivablesExcludingAccruedInterestPercent	0
CY2023Q3	tcbk	Payment Delay Extension Amount PaymentDelayExtensionAmount	45000	usd
CY2023Q3	tcbk	Combination Payment Delay Or Term Reduction CombinationPaymentDelayOrTermReduction	1043000	usd
CY2023Q3	us-gaap	Financing Receivable Modification To Total Financing Receivables Excluding Accrued Interest Percent FinancingReceivableModificationToTotalFinancingReceivablesExcludingAccruedInterestPercent	0.0002
	tcbk	Payment Combination Extension Amount PaymentCombinationExtensionAmount	211000	usd
	tcbk	Payment Delay Extension Amount PaymentDelayExtensionAmount	1344000	usd
	us-gaap	Financing Receivable Modification To Total Financing Receivables Excluding Accrued Interest Percent FinancingReceivableModificationToTotalFinancingReceivablesExcludingAccruedInterestPercent	0.0002
	tcbk	Payment Delay Extension Amount PaymentDelayExtensionAmount	206000	usd
	tcbk	Combination Payment Delay Or Term Reduction CombinationPaymentDelayOrTermReduction	1043000	usd
	us-gaap	Financing Receivable Modification To Total Financing Receivables Excluding Accrued Interest Percent FinancingReceivableModificationToTotalFinancingReceivablesExcludingAccruedInterestPercent	0.0002
	tcbk	Lessee Operating Lease Number Of Renewal Term Options LesseeOperatingLeaseNumberOfRenewalTermOptions	1	renewaloption
CY2024Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1416000	usd
CY2023Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1451000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	4315000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	4553000	usd
CY2024Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	52000	usd
CY2023Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	43000	usd
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	159000	usd
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	279000	usd
CY2024Q3	tcbk	Variable Lease Cost Income VariableLeaseCostIncome	-15000	usd
CY2023Q3	tcbk	Variable Lease Cost Income VariableLeaseCostIncome	9000	usd
	tcbk	Variable Lease Cost Income VariableLeaseCostIncome	8000	usd
	tcbk	Variable Lease Cost Income VariableLeaseCostIncome	29000	usd
CY2024Q3	us-gaap	Lease Cost LeaseCost	1453000	usd
CY2023Q3	us-gaap	Lease Cost LeaseCost	1503000	usd
	us-gaap	Lease Cost LeaseCost	4482000	usd
	us-gaap	Lease Cost LeaseCost	4861000	usd
CY2024Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	1511000	usd
CY2023Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	1576000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	4658000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	4840000	usd
CY2024Q3	tcbk	Right Of Use Asset Obtained In Exchange For Operating Lease Liability Net RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityNet	800000	usd
CY2023Q3	tcbk	Right Of Use Asset Obtained In Exchange For Operating Lease Liability Net RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityNet	-544000	usd
	tcbk	Right Of Use Asset Obtained In Exchange For Operating Lease Liability Net RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityNet	2226000	usd
	tcbk	Right Of Use Asset Obtained In Exchange For Operating Lease Liability Net RightOfUseAssetObtainedInExchangeForOperatingLeaseLiabilityNet	4311000	usd
CY2024Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y8M12D
CY2023Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y1M6D
CY2024Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0350
CY2023Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0331
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1454000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	5509000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4950000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4284000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3275000	usd
CY2024Q3	tcbk	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	11106000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	30578000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3910000	usd
CY2024Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	26668000	usd
CY2024Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2547736000	usd
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2722689000	usd
CY2024Q3	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	1708726000	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	1731814000	usd
CY2024Q3	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2690045000	usd
CY2023Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2682068000	usd
CY2024Q3	tcbk	Time Deposits250000 Or More TimeDeposits250000OrMore	465907000	usd
CY2023Q4	tcbk	Time Deposits250000 Or More TimeDeposits250000OrMore	250180000	usd
CY2024Q3	tcbk	Other Time Certificates Deposits OtherTimeCertificatesDeposits	624677000	usd
CY2023Q4	tcbk	Other Time Certificates Deposits OtherTimeCertificatesDeposits	447287000	usd
CY2024Q3	us-gaap	Deposits Deposits	8037091000	usd
CY2023Q4	us-gaap	Deposits Deposits	7834038000	usd
CY2024Q3	us-gaap	Interest Bearing Domestic Deposit Certificates Of Deposits InterestBearingDomesticDepositCertificatesOfDeposits	100000000.0	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Certificates Of Deposits InterestBearingDomesticDepositCertificatesOfDeposits	50000000.0	usd
CY2024Q3	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	2000000.0	usd
CY2023Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	1800000	usd
CY2024Q3	us-gaap	Other Borrowings OtherBorrowings	266767000	usd
CY2023Q4	us-gaap	Other Borrowings OtherBorrowings	632582000	usd
CY2024Q3	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	10500000	usd
CY2023Q3	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	11500000	usd
	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	54400000	usd
	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	41400000	usd
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
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	7500	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	23.21
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0	shares
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	0
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Remaining Contractual Terms ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms	P1Y8M12D
CY2024Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	12782000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	13075000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	38215000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	37240000	usd
CY2024Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	786000	usd
CY2023Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	684000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2420000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2274000	usd
CY2024Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	1502000	usd
CY2023Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	1141000	usd
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	3989000	usd
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	3233000	usd
CY2024Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	549000	usd
CY2023Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	382000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1198000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	883000	usd
CY2024Q3	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	62000	usd
CY2023Q3	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	160000	usd
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	377000	usd
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	332000	usd
CY2024Q3	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	303000	usd
CY2023Q3	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	396000	usd
	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	916000	usd
	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	1091000	usd
CY2024Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	2000	usd
CY2023Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	usd
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-43000	usd
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-164000	usd
CY2024Q3	tcbk	Gain Loss On Marketable Equity Securities Net GainLossOnMarketableEquitySecuritiesNet	356000	usd
CY2023Q3	tcbk	Gain Loss On Marketable Equity Securities Net GainLossOnMarketableEquitySecuritiesNet	-81000	usd
	tcbk	Gain Loss On Marketable Equity Securities Net GainLossOnMarketableEquitySecuritiesNet	207000	usd
	tcbk	Gain Loss On Marketable Equity Securities Net GainLossOnMarketableEquitySecuritiesNet	-81000	usd
CY2024Q3	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	153000	usd
CY2023Q3	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	227000	usd
	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	853000	usd
	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	552000	usd
CY2024Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	3713000	usd
CY2023Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	2909000	usd
	us-gaap	Noninterest Income Other NoninterestIncomeOther	9917000	usd
	us-gaap	Noninterest Income Other NoninterestIncomeOther	8120000	usd
CY2024Q3	us-gaap	Noninterest Income NoninterestIncome	16495000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	15984000	usd
	us-gaap	Noninterest Income NoninterestIncome	48132000	usd
	us-gaap	Noninterest Income NoninterestIncome	45360000	usd
CY2024Q3	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	24407000	usd
CY2023Q3	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	23616000	usd
	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	72279000	usd
	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	70675000	usd
CY2024Q3	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	4361000	usd
CY2023Q3	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	4391000	usd
	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	12329000	usd
	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	11663000	usd
CY2024Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	6782000	usd
CY2023Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	6456000	usd
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	20647000	usd
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	19402000	usd
CY2024Q3	tcbk	Labor And Related Expense Excluding Merger Related Costs LaborAndRelatedExpenseExcludingMergerRelatedCosts	35550000	usd
CY2023Q3	tcbk	Labor And Related Expense Excluding Merger Related Costs LaborAndRelatedExpenseExcludingMergerRelatedCosts	34463000	usd
	tcbk	Labor And Related Expense Excluding Merger Related Costs LaborAndRelatedExpenseExcludingMergerRelatedCosts	105255000	usd
	tcbk	Labor And Related Expense Excluding Merger Related Costs LaborAndRelatedExpenseExcludingMergerRelatedCosts	101740000	usd
CY2024Q3	us-gaap	Occupancy Net OccupancyNet	4191000	usd
CY2023Q3	us-gaap	Occupancy Net OccupancyNet	3948000	usd
	us-gaap	Occupancy Net OccupancyNet	12205000	usd
	us-gaap	Occupancy Net OccupancyNet	12099000	usd
CY2024Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	5258000	usd
CY2023Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	5246000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	15459000	usd
CY2024Q3	us-gaap	Equipment Expense EquipmentExpense	1374000	usd
CY2023Q3	us-gaap	Equipment Expense EquipmentExpense	1503000	usd
CY2024Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1030000	usd
CY2023Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1590000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3090000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4902000	usd
CY2024Q3	us-gaap	Advertising Expense AdvertisingExpense	1152000	usd
CY2023Q3	us-gaap	Advertising Expense AdvertisingExpense	881000	usd
	us-gaap	Advertising Expense AdvertisingExpense	2733000	usd
CY2024Q3	tcbk	Network Charges NetworkCharges	1712000	usd
CY2023Q3	tcbk	Network Charges NetworkCharges	1606000	usd
	tcbk	Network Charges NetworkCharges	5360000	usd
	tcbk	Network Charges NetworkCharges	5217000	usd
CY2023Q3	us-gaap	Professional Fees ProfessionalFees	1752000	usd
	us-gaap	Professional Fees ProfessionalFees	5047000	usd
	us-gaap	Professional Fees ProfessionalFees	5326000	usd
	us-gaap	Communication Communication	1971000	usd
	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	3651000	usd
	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	3979000	usd
CY2024Q3	us-gaap	Postage Expense PostageExpense	335000	usd
CY2023Q3	us-gaap	Postage Expense PostageExpense	306000	usd
	us-gaap	Postage Expense PostageExpense	983000	usd
	us-gaap	Postage Expense PostageExpense	916000	usd
CY2024Q3	tcbk	Operational Losses OperationalLosses	603000	usd
CY2023Q3	tcbk	Operational Losses OperationalLosses	474000	usd
	tcbk	Operational Losses OperationalLosses	1199000	usd
	tcbk	Operational Losses OperationalLosses	1999000	usd
CY2024Q3	tcbk	Courier Service CourierService	542000	usd
CY2023Q3	tcbk	Courier Service CourierService	492000	usd
	tcbk	Courier Service CourierService	1581000	usd
	tcbk	Courier Service CourierService	1314000	usd
CY2024Q3	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans1 GainLossOnForeclosedAssetsExcludingTransferOfLoans1	-26000	usd
CY2023Q3	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans1 GainLossOnForeclosedAssetsExcludingTransferOfLoans1	152000	usd
	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans1 GainLossOnForeclosedAssetsExcludingTransferOfLoans1	12000	usd
	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans1 GainLossOnForeclosedAssetsExcludingTransferOfLoans1	152000	usd
CY2024Q3	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-6000	usd
CY2023Q3	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-4000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-12000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-22000	usd
CY2024Q3	tcbk	Other Operating Expenses OtherOperatingExpenses	4052000	usd
CY2023Q3	tcbk	Other Operating Expenses OtherOperatingExpenses	4004000	usd
	tcbk	Other Operating Expenses OtherOperatingExpenses	12131000	usd
	tcbk	Other Operating Expenses OtherOperatingExpenses	12688000	usd
CY2024Q3	tcbk	Other Noninterest Expense Excluding Merger Related Costs OtherNoninterestExpenseExcludingMergerRelatedCosts	23937000	usd
CY2023Q3	tcbk	Other Noninterest Expense Excluding Merger Related Costs OtherNoninterestExpenseExcludingMergerRelatedCosts	23415000	usd
	tcbk	Other Noninterest Expense Excluding Merger Related Costs OtherNoninterestExpenseExcludingMergerRelatedCosts	69075000	usd
	tcbk	Other Noninterest Expense Excluding Merger Related Costs OtherNoninterestExpenseExcludingMergerRelatedCosts	71175000	usd
CY2024Q3	us-gaap	Noninterest Expense NoninterestExpense	59487000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	57878000	usd
	us-gaap	Noninterest Expense NoninterestExpense	174330000	usd
	us-gaap	Noninterest Expense NoninterestExpense	172915000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	29051000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	30590000	usd
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32993000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33263000	shares
CY2024Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	144000	shares
CY2023Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	56000	shares
CY2024Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33137000	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33319000	shares
CY2024Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2023Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
	us-gaap	Net Income Loss NetIncomeLoss	85834000	usd
	us-gaap	Net Income Loss NetIncomeLoss	91315000	usd
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33119000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33259000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	132000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	97000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33251000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33356000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	44538000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-44040000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	36192000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-31511000	usd
CY2024Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-116977000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-153169000	usd
	tcbk	Number Of Investment Securities Classified As Level3 NumberOfInvestmentSecuritiesClassifiedAsLevel3	0	investmentsecurity
CY2024Q3	us-gaap	Equity Securities Fv Ni Restricted EquitySecuritiesFvNiRestricted	0	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Restricted EquitySecuritiesFvNiRestricted	0	usd
CY2024Q3	tcbk	Losses From Fair Value Adjustments Assets And Liabilities LossesFromFairValueAdjustmentsAssetsAndLiabilities	4051000	usd
CY2023Q3	tcbk	Losses From Fair Value Adjustments Assets And Liabilities LossesFromFairValueAdjustmentsAssetsAndLiabilities	-4708000	usd
	tcbk	Losses From Fair Value Adjustments Assets And Liabilities LossesFromFairValueAdjustmentsAssetsAndLiabilities	4358000	usd
	tcbk	Losses From Fair Value Adjustments Assets And Liabilities LossesFromFairValueAdjustmentsAssetsAndLiabilities	2514000	usd
	tcbk	Loan Charged Off Carrying Value LoanChargedOffCarryingValue	0	usd
CY2024Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2024Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
0000356171-24-000133-index-headers.html	Edgar Link	pending
0000356171-24-000133-index.html	Edgar Link	pending
0000356171-24-000133.txt	Edgar Link	pending
0000356171-24-000133-xbrl.zip	Edgar Link	pending
a101-2024nonexecrsuawardgr.htm	Edgar Link	pending
a102-2024execrsuawardgrant.htm	Edgar Link	pending
a103-2024nonexecpsuawardgr.htm	Edgar Link	pending
a104-2024execpsuawardgrant.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
image_01a.jpg	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
MetaLinks.json	Edgar Link	pending
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report.css	Edgar Link	pending
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tcbk-20240930_cal.xml	Edgar Link	unprocessable
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tcbk-20240930_pre.xml	Edgar Link	unprocessable
tcbk-20240930_htm.xml	Edgar Link	completed

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$TCBK
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2024 Q4 Form 10-Q Financial Statement

#000035617124000133 Filed on November 07, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

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$TCBK TRICO BANCSHARES / Stock $tcbk

2024 Q4 Form 10-Q Financial Statement

#000035617124000133 Filed on November 07, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBK
TRICO BANCSHARES / Stock $tcbk