$TCBK
Trico Bancshares Stock $tcbk

$tcbk Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-Q Financial Statement

#000035617121000065 Filed on November 08, 2021

Income Statement

Concept	2021 Q4	2021 Q3	2020 Q3
Revenue	$71.02M	$69.63M	$65.44M
YoY Change	4.32%	6.4%	-5.01%
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	$2.700M	$2.900M	$3.000M
YoY Change	-12.9%	-3.33%	-3.23%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$1.241M	$1.395M	$1.984M
YoY Change	-25.2%	-29.69%	-52.77%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$38.63M	$38.96M	$24.23M
YoY Change	19.19%	60.79%	-26.09%
Income Tax	$10.40M	$11.53M	$6.622M
% Of Pretax Income	26.94%	29.61%	27.33%
Net Earnings	$28.22M	$27.42M	$17.61M
YoY Change	19.3%	55.75%	-24.74%
Net Earnings / Revenue	39.74%	39.38%	26.9%
Basic Earnings Per Share		$0.92	$0.59
Diluted Earnings Per Share	$0.94	$0.92	$0.59
COMMON SHARES
Basic Shares Outstanding	29.71M shares	29.71M shares	29.76M shares
Diluted Shares Outstanding		29.85M shares	29.84M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2020 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$768.4M	$740.2M	$652.6M
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	$78.69M	$78.97M	$84.86M
YoY Change	-6.02%	-6.94%	-2.94%
Goodwill	$220.9M	$220.9M	$220.9M
YoY Change	0.0%	0.0%	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	$8.615B	$8.458B	$7.450B
YoY Change	12.77%	13.53%	16.68%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$900.0K	$1.100M	$1.600M
YoY Change	-35.71%	-31.25%	-42.86%
Accrued Expenses	$26.30M	$27.30M	$28.90M
YoY Change	-6.07%	-5.54%	1.4%
Deferred Revenue
YoY Change
Short-Term Debt	$50.10M	$45.60M	$27.10M
YoY Change	86.25%	68.27%	65.24%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$27.20M	$28.40M	$30.50M
YoY Change	-7.48%	-6.89%	-2.56%
LONG-TERM LIABILITIES
Long-Term Debt	$58.10M	$58.00M	$57.50M
YoY Change	0.87%	0.87%	0.52%
Other Long-Term Liabilities	$112.1M	$107.3M	$91.90M
YoY Change	18.5%	16.76%	4.55%
Total Long-Term Liabilities	$170.2M	$165.3M	$149.4M
YoY Change	11.83%	10.64%	2.96%
TOTAL LIABILITIES
Total Short-Term Liabilities	$27.20M	$28.40M	$30.50M
Total Long-Term Liabilities	$170.2M	$165.3M	$149.4M
Total Liabilities	$7.615B	$7.476B	$6.548B
YoY Change	13.41%	14.18%	19.3%
SHAREHOLDERS EQUITY
Retained Earnings	$467.0M	$446.9M	$365.6M
YoY Change	22.24%	22.25%	3.94%
Common Stock	$532.2M	$531.3M	$531.1M
YoY Change	0.27%	0.05%	-2.27%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.000B	$982.0M	$902.3M
YoY Change
Total Liabilities & Shareholders Equity	$8.615B	$8.458B	$7.450B
YoY Change	12.77%	13.53%	16.68%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2020 Q3
OPERATING ACTIVITIES
Net Income	$28.22M	$27.42M	$17.61M
YoY Change	19.3%	55.75%	-24.74%
Depreciation, Depletion And Amortization	$2.700M	$2.900M	$3.000M
YoY Change	-12.9%	-3.33%	-3.23%
Cash From Operating Activities	$32.30M	$41.10M	$14.90M
YoY Change	-10.77%	175.84%	-64.86%
INVESTING ACTIVITIES
Capital Expenditures	-$1.100M	-$1.200M	-$1.000M
YoY Change	120.0%	20.0%	100.0%
Acquisitions
YoY Change
Other Investing Activities	-$129.8M	-$180.7M	-$141.4M
YoY Change	-26.21%	27.79%	-250.27%
Cash From Investing Activities	-$130.9M	-$181.9M	-$142.4M
YoY Change	-25.79%	27.74%	-252.14%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	126.8M	241.3M	74.30M
YoY Change	-19.34%	224.76%	-241.25%
NET CHANGE
Cash From Operating Activities	32.30M	41.10M	14.90M
Cash From Investing Activities	-130.9M	-181.9M	-142.4M
Cash From Financing Activities	126.8M	241.3M	74.30M
Net Change In Cash	28.20M	100.5M	-53.20M
YoY Change	65.88%	-288.91%	-163.79%
FREE CASH FLOW
Cash From Operating Activities	$32.30M	$41.10M	$14.90M
Capital Expenditures	-$1.100M	-$1.200M	-$1.000M
Free Cash Flow	$33.40M	$42.30M	$15.90M
YoY Change	-8.99%	166.04%	-62.94%

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	2021
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Entity Central Index Key EntityCentralIndexKey	0000356171
CY2019	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201613Member
	dei	Document Type DocumentType	10-Q
	dei	Entity Shell Company EntityShellCompany	false
CY2021Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	29714609	shares
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
	dei	Entity File Number EntityFileNumber	000-10661
	dei	Document Transition Report DocumentTransitionReport	false
	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
	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 Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021Q3	tcbk	Cash At Federal Reserve And Other Banks CashAtFederalReserveAndOtherBanks	657048000	USD
CY2021Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	83188000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	77253000	USD
CY2020Q4	tcbk	Cash At Federal Reserve And Other Banks CashAtFederalReserveAndOtherBanks	592298000	USD
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	740236000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	669551000	USD
CY2021Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	2965000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	3025000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	2095821000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1414264000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	0	USD
CY2021Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	0	USD
CY2021Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	216979000	USD
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	284563000	USD
CY2021Q3	us-gaap	Restricted Investments RestrictedInvestments	17250000	USD
CY2020Q4	us-gaap	Restricted Investments RestrictedInvestments	17250000	USD
CY2021Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	3072000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	6268000	USD
CY2021Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	4887496000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	4763127000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	84306000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	91847000	USD
CY2021Q3	us-gaap	Notes Receivable Net NotesReceivableNet	4803190000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	4671280000	USD
CY2021Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	78968000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	83731000	USD
CY2021Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	120932000	USD
CY2020Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	118870000	USD
CY2021Q3	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	18425000	USD
CY2020Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	20004000	USD
CY2021Q3	us-gaap	Goodwill Goodwill	220872000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	220872000	USD
CY2021Q3	tcbk	Core Deposit Intangible CoreDepositIntangible	13562000	USD
CY2020Q4	tcbk	Core Deposit Intangible CoreDepositIntangible	17833000	USD
CY2021Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	26815000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	27846000	USD
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CY2020Q4	us-gaap	Other Assets OtherAssets	84172000	USD
CY2021Q3	us-gaap	Assets Assets	8458030000	USD
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CY2021Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2943016000	USD
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2581517000	USD
CY2021Q3	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	4293806000	USD
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CY2020Q4	us-gaap	Deposits Deposits	6505934000	USD
CY2021Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	1056000	USD
CY2020Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	1362000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	27290000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	27973000	USD
CY2021Q3	us-gaap	Other Liabilities OtherLiabilities	107282000	USD
CY2020Q4	us-gaap	Other Liabilities OtherLiabilities	94597000	USD
CY2021Q3	us-gaap	Other Borrowings OtherBorrowings	45601000	USD
CY2020Q4	us-gaap	Other Borrowings OtherBorrowings	26914000	USD
CY2021Q3	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	57965000	USD
CY2020Q4	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	57635000	USD
CY2021Q3	us-gaap	Liabilities Liabilities	7476016000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	6714415000	USD
CY2021Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
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CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2021Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
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CY2021Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
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CY2021Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	29714609	shares
CY2021Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	29714609	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	29727214	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	29727214	shares
CY2021Q3	us-gaap	Common Stock Value CommonStockValue	531339000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	530835000	USD
CY2021Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	446948000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	381999000	USD
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	3727000	USD
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CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	982014000	USD
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	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	181465000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	172706000	USD
CY2021Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	7483000	USD
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	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	20594000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	21830000	USD
CY2021Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	882000	USD
CY2020Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	848000	USD
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	2656000	USD
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	2704000	USD
CY2021Q3	us-gaap	Dividend Income Operating DividendIncomeOperating	258000	USD
CY2020Q3	us-gaap	Dividend Income Operating DividendIncomeOperating	223000	USD
	us-gaap	Dividend Income Operating DividendIncomeOperating	730000	USD
	us-gaap	Dividend Income Operating DividendIncomeOperating	807000	USD
CY2021Q3	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	280000	USD
CY2020Q3	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	175000	USD
	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	578000	USD
	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	1056000	USD
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	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	206023000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	199103000	USD
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	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2620000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	5776000	USD
CY2021Q3	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	6000	USD
CY2020Q3	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	4000	USD
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	15000	USD
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	13000	USD
CY2021Q3	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	534000	USD
CY2020Q3	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	568000	USD
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	1632000	USD
CY2020Q3	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	7649000	USD
	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	-7755000	USD
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	2009000	USD
CY2021Q3	us-gaap	Interest Expense InterestExpense	1395000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	1984000	USD
	us-gaap	Interest Expense InterestExpense	4267000	USD
	us-gaap	Interest Expense InterestExpense	7798000	USD
CY2021Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	68233000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	63454000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	201756000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	191305000	USD
CY2021Q3	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	-1435000	USD
	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	37963000	USD
CY2021Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	69668000	USD
CY2020Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	55805000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	209511000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	153342000	USD
CY2021Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	11265000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	10469000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	32671000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	27763000	USD
CY2021Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1814000	USD
CY2020Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	3035000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	7908000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	5662000	USD
CY2021Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	7000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	7000	USD
CY2021Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	957000	USD
CY2020Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	667000	USD
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	2738000	USD
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	2244000	USD
CY2020Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	17393000	USD
CY2021Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	19533000	USD
CY2021Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	644000	USD
CY2020Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	773000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2062000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2203000	USD
CY2021Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	415000	USD
CY2020Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	186000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1783000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	735000	USD
CY2021Q3	us-gaap	Noninterest Income NoninterestIncome	15095000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	15137000	USD
	us-gaap	Noninterest Income NoninterestIncome	47162000	USD
	us-gaap	Noninterest Income NoninterestIncome	38614000	USD
CY2021Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	26274000	USD
CY2020Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	29321000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	78685000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	83648000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	52911000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	53365000	USD
CY2021Q3	us-gaap	Noninterest Expense NoninterestExpense	45807000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	46714000	USD
	us-gaap	Noninterest Expense NoninterestExpense	131596000	USD
	us-gaap	Noninterest Expense NoninterestExpense	137013000	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	38956000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	24228000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	125077000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	54943000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11534000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6622000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35644000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13786000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	27422000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	17606000	USD
	us-gaap	Net Income Loss NetIncomeLoss	89433000	USD
	us-gaap	Net Income Loss NetIncomeLoss	41157000	USD
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.92
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.01
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.37
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.92
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.99
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.37
CY2021Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.25
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.22
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.75
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.66
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	27422000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	17606000	USD
	us-gaap	Net Income Loss NetIncomeLoss	89433000	USD
	us-gaap	Net Income Loss NetIncomeLoss	41157000	USD
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	485000	USD
CY2021Q3	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	252000	USD
CY2021Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1114000	USD
CY2021Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	7429000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	1018000	USD
	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	458000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	982014000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	906570000	USD
	us-gaap	Net Income Loss NetIncomeLoss	41157000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	10798000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	22563000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	80880000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	51955000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	885686000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	17606000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4957000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	259000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	383000	USD
CY2020Q3	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	162000	USD
CY2020Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	242000	USD
CY2020Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6549000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	902262000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	966780000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	27422000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-4440000	USD
CY2021Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	58000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	547000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	7069000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	4957000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-4440000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	3266000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-7924000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1691000	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	-2817000	USD
CY2021Q3	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax	0	USD
CY2020Q3	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	-629000	USD
	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax	912000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4440000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-8553000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	10798000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	22982000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	902262000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	25545000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	19758000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	925114000	USD
	us-gaap	Net Income Loss NetIncomeLoss	89433000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8553000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	86000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	1242000	USD
	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	658000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	3675000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	22291000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	982014000	USD
	us-gaap	Profit Loss ProfitLoss	89433000	USD
	us-gaap	Profit Loss ProfitLoss	41157000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	4923000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	4778000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4271000	USD
	tcbk	Change In Market Value Of Mortgage Servicing Rights ChangeInMarketValueOfMortgageServicingRights	691000	USD
	tcbk	Change In Market Value Of Mortgage Servicing Rights ChangeInMarketValueOfMortgageServicingRights	2258000	USD
	tcbk	Provision For Benefit From Losses On Foreclosed Assets ProvisionForBenefitFromLossesOnForeclosedAssets	0	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4293000	USD
	tcbk	Provision For Benefit From Provisions For Credit Losses ProvisionForBenefitFromProvisionsForCreditLosses	-7880000	USD
	tcbk	Provision For Benefit From Provisions For Credit Losses ProvisionForBenefitFromProvisionsForCreditLosses	37738000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-4702000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1747000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	7000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	175127000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	152968000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	184896000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	156347000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	7908000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	5662000	USD
	tcbk	Provision For Benefit From Losses On Foreclosed Assets ProvisionForBenefitFromLossesOnForeclosedAssets	0	USD
	tcbk	Gain On Transfer Of Loans To Foreclosed Assets GainOnTransferOfLoansToForeclosedAssets	133000	USD
	tcbk	Gain On Transfer Of Loans To Foreclosed Assets GainOnTransferOfLoansToForeclosedAssets	-128000	USD
	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans GainLossOnForeclosedAssetsExcludingTransferOfLoans	68000	USD
	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans GainLossOnForeclosedAssetsExcludingTransferOfLoans	57000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3690000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3716000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	445000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-37000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2062000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2203000	USD
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-59000	USD
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	72000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	1900000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	1476000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-1579000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	660000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-306000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-836000	USD
	tcbk	Increase Decrease In Amortization Of Operating Lease Right Of Use Asset IncreaseDecreaseInAmortizationOfOperatingLeaseRightOfUseAsset	4038000	USD
	tcbk	Increase Decrease In Amortization Of Operating Lease Right Of Use Asset IncreaseDecreaseInAmortizationOfOperatingLeaseRightOfUseAsset	4070000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1046000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-9264000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	99919000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	78584000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	263865000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	114122000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	66880000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	64054000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	229000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	960668000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	298018000	USD
	tcbk	Payment For Loan And Lease Originations And Principal Collections PaymentForLoanAndLeaseOriginationsAndPrincipalCollections	21869000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	22291000	USD
	tcbk	Payment For Loan And Lease Originations And Principal Collections PaymentForLoanAndLeaseOriginationsAndPrincipalCollections	518564000	USD
	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	102710000	USD
	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	0	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	944000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	570000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2743000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2114000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2340000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-752929000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-639947000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	730888000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	973594000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	18687000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	8601000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3675000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	24999000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	723695000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	937438000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	70685000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	376075000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	669551000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	276507000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	740236000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	19758000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	86000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	652582000	USD
	tcbk	Unrealized Gain Loss On Securities Available For Sale UnrealizedGainLossOnSecuritiesAvailableForSale	-11249000	USD
	tcbk	Unrealized Gain Loss On Securities Available For Sale UnrealizedGainLossOnSecuritiesAvailableForSale	10036000	USD
	tcbk	Market Value Of Shares Tendered By Employees In Lieu Of Cash To Pay For Exercise Of Options And Or Related Taxes MarketValueOfSharesTenderedByEmployeesInLieuOfCashToPayForExerciseOfOptionsAndOrRelatedTaxes	835000	USD
	tcbk	Market Value Of Shares Tendered By Employees In Lieu Of Cash To Pay For Exercise Of Options And Or Related Taxes MarketValueOfSharesTenderedByEmployeesInLieuOfCashToPayForExerciseOfOptionsAndOrRelatedTaxes	736000	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	2883000	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	4161000	USD
	tcbk	Loans Transferred To Foreclosed Assets LoansTransferredToForeclosedAssets	549000	USD
	tcbk	Loans Transferred To Foreclosed Assets LoansTransferredToForeclosedAssets	157000	USD
	us-gaap	Interest Paid Net InterestPaidNet	4573000	USD
	tcbk	Number Of Subsidiary Business Trust NumberOfSubsidiaryBusinessTrust	5	trust
CY2021Q3	tcbk	Number Of Loan Production Offices NumberOfLoanProductionOffices	2	office
CY2021Q3	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	1741000	USD
	us-gaap	Interest Paid Net InterestPaidNet	8634000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	38500000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	26000000	USD
	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;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:'Times New Roman',sans-serif;font-size:10pt;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:'Times New Roman',sans-serif;font-size:10pt;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, 2020 (the “2020 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:'Times New Roman',sans-serif;font-size:10pt;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:'Times New Roman',sans-serif;font-size:10pt;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:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:115%">Reclassification</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;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
	us-gaap	Financing Receivable Allowance For Credit Losses Policy For Uncollectible Amounts FinancingReceivableAllowanceForCreditLossesPolicyForUncollectibleAmounts	<div style="margin-top:12pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Allowance for Credit Losses - Loans</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The allowance for credit losses (ACL) is a valuation account that is deducted from the loan's amortized cost basis to present the net amount expected to be collected on the loans. Loans are charged off against the allowance when management believes the recorded loan balance is confirmed as uncollectible. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Regardless of the determination that a charge-off is appropriate for financial accounting purposes, the Company manages its loan portfolio by continually monitoring, where possible, a borrower's ability to pay through the collection of financial information, delinquency status, borrower discussion and the encouragement to repay in accordance with the original contract or modified terms, if appropriate.</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Management estimates the allowance balance using relevant information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. The allowance for credit losses is measured on a collective (pool) basis when similar risk characteristics exist. Historical credit loss experience provides the basis for the estimation of expected credit losses, which captures loan balances as of a point in time to form a cohort, then tracks the respective losses generated by that cohort of loans over the remaining life. The Company identified and accumulated loan cohort historical loss data beginning with the fourth quarter of 2008 and through the current period. In situations where the Company's actual loss history was not statistically relevant, the loss history of peers, defined as financial institutions with assets greater than three billion and less than ten billion, were utilized to create a minimum loss rate. Adjustments to historical loss information are made for differences in relevant current loan-specific risk characteristics, such as historical timing of losses relative to the loan origination. In its loss forecasting framework, the Company incorporates forward-looking information through the use of macroeconomic scenarios applied over the forecasted life of the assets. These macroeconomic scenarios incorporate variables that have historically been key drivers of increases and decreases in credit losses. These variables include, but are not limited to changes in environmental conditions, such as California unemployment rates, household debt levels and U.S. gross domestic product.</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">A loan is considered to be collateral dependent when repayment is expected to be provided substantially through the operation or sale of the collateral. The ACL on collateral dependent loans is measured using the fair value of the underlying collateral, adjusted for costs to </span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">sell when applicable, less the amortized cost basis of the financial asset. If the value of underlying collateral is determined to be less than the recorded amount of the loan, a charge-off will be taken. Loans for which the terms have been modified resulting in a concession, and for which the borrower is experiencing financial difficulties, is considered to be a troubled debt restructuring (TDR). The ACL on a TDR is measured using the same method as all other portfolio loans, except when the value of a concession cannot be measured using a method other than the discounted cash flow method. When the value of a concession is measured using the discounted cash flow method, the ACL is determined by discounting the expected future cash flows at the original interest rate of the loan. </span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company has identified the following portfolio segments to evaluate and measure the allowance for credit loss:</span></div><div style="margin-top:6pt;padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Commercial real estate</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">:</span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Commercial real estate - Non-owner occupied: These commercial properties typically consist of buildings which are leased to others for their use and rely on rents as the primary source of repayment. Property types are predominantly office, retail, or light industrial but the portfolio also has some special use properties. As such, the risk of loss associated with these properties is primarily driven by general economic changes or changes in regional economies and the impact of such on a tenant’s ability to pay. Ultimately this can affect occupancy, rental rates, or both. Additional risk of loss can come from new construction resulting in oversupply, the costs to hold or operate the property, or changes in interest rates. The terms on these loans at origination typically have maturities from <span style="-sec-ix-hidden:id3VybDovL2RvY3MudjEvZG9jOjgyMDE2MTIyMTgyYTRhZDg4ODRiNGE1NmQxMTNiYzY1L3NlYzo4MjAxNjEyMjE4MmE0YWQ4ODg0YjRhNTZkMTEzYmM2NV8zMS9mcmFnOjU1MjgwMGRjNWQ4NjQyMmU4YjczYmZjYzA2NDMxZDljL3RleHRyZWdpb246NTUyODAwZGM1ZDg2NDIyZThiNzNiZmNjMDY0MzFkOWNfMTM0ODA_716480fc-87f0-455b-8b02-77be2242f794">five</span> to ten years with amortization periods from <span style="-sec-ix-hidden:id3VybDovL2RvY3MudjEvZG9jOjgyMDE2MTIyMTgyYTRhZDg4ODRiNGE1NmQxMTNiYzY1L3NlYzo4MjAxNjEyMjE4MmE0YWQ4ODg0YjRhNTZkMTEzYmM2NV8zMS9mcmFnOjU1MjgwMGRjNWQ4NjQyMmU4YjczYmZjYzA2NDMxZDljL3RleHRyZWdpb246NTUyODAwZGM1ZDg2NDIyZThiNzNiZmNjMDY0MzFkOWNfMTM1MjY_a6407804-3b24-4be2-9a86-49c2d767810d">fifteen</span> to thirty years.</span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Commercial real estate - Owner occupied: These credits are primarily susceptible to changes in the financial condition of the business operated by the property owner. This may be driven by changes in, among other things, industry challenges, factors unique to the operating geography of the borrower, change in the individual fortunes of the business owner, general economic conditions and changes in business cycles. When default is driven by issues related specifically to the business owner, collateral values tend to provide better repayment support and may result in little or no loss. Alternatively, when default is driven more by general economic conditions, the underlying collateral may have devalued more and thus result in larger losses in the event of default. The terms on these loans at origination typically have maturities from <span style="-sec-ix-hidden:id3VybDovL2RvY3MudjEvZG9jOjgyMDE2MTIyMTgyYTRhZDg4ODRiNGE1NmQxMTNiYzY1L3NlYzo4MjAxNjEyMjE4MmE0YWQ4ODg0YjRhNTZkMTEzYmM2NV8zMS9mcmFnOjU1MjgwMGRjNWQ4NjQyMmU4YjczYmZjYzA2NDMxZDljL3RleHRyZWdpb246NTUyODAwZGM1ZDg2NDIyZThiNzNiZmNjMDY0MzFkOWNfMTQzOTA_c62e9c7a-7ea3-4917-af93-08a77508e693">five</span> to ten years with amortization periods from <span style="-sec-ix-hidden:id3VybDovL2RvY3MudjEvZG9jOjgyMDE2MTIyMTgyYTRhZDg4ODRiNGE1NmQxMTNiYzY1L3NlYzo4MjAxNjEyMjE4MmE0YWQ4ODg0YjRhNTZkMTEzYmM2NV8zMS9mcmFnOjU1MjgwMGRjNWQ4NjQyMmU4YjczYmZjYzA2NDMxZDljL3RleHRyZWdpb246NTUyODAwZGM1ZDg2NDIyZThiNzNiZmNjMDY0MzFkOWNfMTQ0MzY_2cfdd331-2297-48a3-b1b9-5ab062f9d71f">fifteen</span> to thirty years.</span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Multifamily: These commercial properties are generally comprised of more than four rentable units, such as apartment buildings, with each unit intended to be occupied as the primary residence for one or more persons. Multifamily properties are also subject to changes in general or regional economic conditions, such as unemployment, ultimately resulting in increased vacancy rates or reduced rents or both. In addition, new construction can create an oversupply condition and market competition resulting in increased vacancy, reduced market rents, or both. Due to the nature of their use and the greater likelihood of tenant turnover, the management of these properties is more intensive and therefore is more critical to the preclusion of loss.</span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Farmland: While the Company has few loans that were originated for the purpose of the acquisition of these commercial properties, loans secured by farmland represent unique risks that are associated with the operation of an agricultural businesses. The valuation of farmland can vary greatly over time based on the property's access to resources including but not limited to water, crop prices, foreign exchange rates, government regulation or restrictions, and the nature of ongoing capital investment needed to maintain the quality of the property. Loans secured by farmland typically represent less risk to the Company than other agriculture loans as the real estate typically provides greater support in the event of default or need for longer term repayment. </span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Consumer loans</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">:</span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">SFR 1-4 1st DT Liens: The most significant drivers of potential loss within the Company's residential real estate portfolio relate general, regional, or individual changes in economic conditions and their effect on employment and borrowers cash flow. Risk in this portfolio is best measured by changes in borrower credit score and loan-to-value. Loss estimates are based on the general movement in credit score, economic outlook and its effects on employment and the value of homes and the Bank’s historical loss experience adjusted to reflect the economic outlook and the unemployment rate.</span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">SFR HELOCs and Junior Liens: Similar to residential real estate term loans, HELOCs and junior liens performance is also primarily driven by borrower cash flows based on employment status. However, HELOCs carry additional risks associated with the fact that most of these loans are secured by a deed of trust in a position that is junior to the primary lien holder. Furthermore, the risk that as the borrower's financial strength deteriorates, the outstanding balance on these credit lines may increase as they may only be canceled by the Company if certain limited criteria are met. In addition to the allowance for credit losses maintained as a percent of the outstanding loan balance, the Company maintains additional reserves for the unfunded portion of the HELOC. </span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Other: The majority of consumer loans are secured by automobiles, with the remainder primarily unsecured revolving debt (credit cards). These loans are susceptible to three primary risks; non-payment due to income loss, over-extension of credit and, when the borrower is unable to pay, shortfall in collateral value, if any. Typically non-payment is due to loss of job and will follow general economic trends in the marketplace driven primarily by rises in the unemployment rate. Loss of collateral value can be due to market demand shifts, damage to collateral itself or a combination of those factors. Credit card loans are unsecured and while collection efforts are pursued in the event of default, there is typically limited opportunity for recovery. Loss estimates are based on the general movement in credit score, economic outlook and its effects on employment and the Bank’s historical loss experience adjusted to reflect the economic outlook and the unemployment rate.</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Commercial and Industrial:</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Repayment of these loans is primarily based on the cash flow of the borrower, and secondarily on the underlying collateral provided by the borrower. A borrower's cash flow may be unpredictable, and collateral securing these loans may fluctuate in value. Most often, collateral includes accounts receivable, inventory, or equipment. Collateral securing these loans may depreciate over time, may be difficult to appraise, may be illiquid and may fluctuate in value based on the success of the business. Actual and forecast changes in gross domestic product are believed to be corollary to losses associated with these credits.</span></div><div style="margin-top:6pt;padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Construction</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">: </span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">While secured by real estate, construction loans represent a greater level of risk than term real estate loans due to the nature of the additional risks associated with the not only the completion of construction within an estimated time period and budget, but also the need to either sell the building or reach a level of stabilized occupancy sufficient to generate the cash flows necessary to support debt service and operating costs. The Company seeks to mitigate the additional risks associated with construction lending by requiring borrowers to comply with lower loan to value ratios and additional covenants as well as strong tertiary support of guarantors. The loss forecasting model applies the historical rate of loss for similar loans over the expected life of the asset as adjusted for macroeconomic factors. </span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Agriculture Production:</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Repayment of agricultural loans is dependent upon successful operation of the agricultural business, which is greatly impacted by factors outside the control of the borrower. These factors include adverse weather conditions, including access to water, that may impact crop yields, loss of livestock due to disease or other factors, declines in market prices for agriculture products, changes in foreign exchange, and the impact of government regulations. In addition, many farms are dependent on a limited number of key individuals whose injury or death may significantly affect the successful operation of the business. Consequently, agricultural production loans may involve a greater degree of risk than other types of loans.</span></div><div style="margin-top:6pt;padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Leases:</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The loss forecasting model applies the historical rate of loss for similar loans over the expected life of the asset. Leases typically represent an elevated level of credit risk as compared to loans secured by real estate as the collateral for leases is often subject to a more rapid rate of depreciation or depletion. The ultimate severity of loss is impacted by the type of collateral securing the exposure, the size of the exposure, the borrower’s industry sector, any guarantors and the geographic market. Assumptions of expected loss are conditioned to the economic outlook and the other variables discussed above.</span></div><div style="margin-top:6pt;padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Unfunded commitments</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">: </span></div><div style="margin-top:6pt;padding-left:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The estimated credit losses associated with these unfunded lending commitments is calculated using the same models and methodologies noted above and incorporate utilization assumptions at time of default. The reserve for unfunded commitments is maintained on the consolidated balance sheet in other liabilities.</span></div>
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CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	19538000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	11604000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
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CY2021Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	0	USD
CY2021Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	228174000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1395081000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	25225000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	6042000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
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CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	0	USD
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CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	154531000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	1020000	USD
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CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	337783000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	339617000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	22548000	USD
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CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1586922000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1592801000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	193411000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	203699000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	2087887000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	2095821000	USD
CY2021Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	216979000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	228174000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1073887000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	10528000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	141119000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1076000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1215006000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	11604000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	212087000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1332000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	297020000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	4710000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	509107000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	6042000	USD
CY2021Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	0	USD
CY2021Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	0	USD
CY2021Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	0	USD
CY2021Q3	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	17218000	USD
CY2020Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	16984000	USD
CY2021Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	4887496000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	4763127000	USD
CY2021Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	4928842000	USD
CY2020Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	4805596000	USD
CY2021Q3	us-gaap	Deferred Discounts Finance Charges And Interest Included In Receivables DeferredDiscountsFinanceChargesAndInterestIncludedInReceivables	-17984000	USD
CY2020Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-25485000	USD
CY2021Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	4893640000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	4763127000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	84306000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	91847000	USD
CY2021Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	86062000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1582000	USD
CY2021Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	60000	USD
CY2021Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3525000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1321000	USD
CY2021Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-1495000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	84306000	USD
CY2021Q2	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3465000	USD
CY2021Q3	tcbk	Off Balance Sheet Credit Loss Writeoff OffBalanceSheetCreditLossWriteoff	0	USD
CY2021Q3	tcbk	Off Balance Sheet Credit Loss Recovery OffBalanceSheetCreditLossRecovery	0	USD
CY2021Q2	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	89527000	USD
CY2021Q3	tcbk	Credit Loss Allowance For Credit Loss Writeoff CreditLossAllowanceForCreditLossWriteoff	1582000	USD
CY2021Q3	tcbk	Credit Loss Allowance For Credit Loss Recovery CreditLossAllowanceForCreditLossRecovery	1321000	USD
CY2021Q3	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	-1435000	USD
CY2021Q3	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	87831000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	91847000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2195000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2534000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-7880000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	84306000	USD
CY2020Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3400000	USD
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	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	125000	USD
CY2021Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3525000	USD
CY2020Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	95247000	USD
	tcbk	Credit Loss Allowance For Credit Loss Writeoff CreditLossAllowanceForCreditLossWriteoff	2195000	USD
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	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	-7755000	USD
CY2021Q3	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	87831000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	30616000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1755000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1885000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	42188000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	91847000	USD
CY2020Q2	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3000000	USD
CY2020Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	7649000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	87575000	USD
CY2019Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	2775000	USD
CY2020	tcbk	Off Balance Sheet Credit Loss Writeoff OffBalanceSheetCreditLossWriteoff	0	USD
CY2020	tcbk	Off Balance Sheet Credit Loss Recovery OffBalanceSheetCreditLossRecovery	0	USD
CY2020	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	625000	USD
CY2020Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3400000	USD
CY2019Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	33391000	USD
CY2020	tcbk	Credit Loss Allowance For Credit Loss Writeoff CreditLossAllowanceForCreditLossWriteoff	1755000	USD
CY2020	tcbk	Credit Loss Allowance For Credit Loss Recovery CreditLossAllowanceForCreditLossRecovery	1885000	USD
CY2020	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	42813000	USD
CY2020Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	95247000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	79739000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	381000	USD
CY2020Q3	tcbk	Off Balance Sheet Credit Loss Recovery OffBalanceSheetCreditLossRecovery	0	USD
CY2020Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	0	USD
CY2020Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3000000	USD
CY2020Q2	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	82739000	USD
CY2020Q3	tcbk	Credit Loss Allowance For Credit Loss Recovery CreditLossAllowanceForCreditLossRecovery	381000	USD
CY2020Q3	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	7649000	USD
CY2020Q3	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	90575000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	30616000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1195000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1503000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	37738000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	87575000	USD
CY2019Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	2775000	USD
	tcbk	Off Balance Sheet Credit Loss Writeoff OffBalanceSheetCreditLossWriteoff	0	USD
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	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	225000	USD
CY2020Q3	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3000000	USD
CY2019Q4	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	33391000	USD
	tcbk	Credit Loss Allowance For Credit Loss Writeoff CreditLossAllowanceForCreditLossWriteoff	1195000	USD
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CY2020Q3	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	90575000	USD
CY2021Q3	tcbk	Financing Receivable Threshold For Loan Analysis FinancingReceivableThresholdForLoanAnalysis	1000000	USD
CY2021Q3	tcbk	Financing Receivable Threshold For Loan Analysis FinancingReceivableThresholdForLoanAnalysis	1000000	USD
CY2021Q3	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	998259000	USD
CY2021Q3	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	652646000	USD
CY2021Q3	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	569131000	USD
CY2021Q3	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	399865000	USD
CY2021Q3	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	451347000	USD
CY2021Q3	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	1194619000	USD
CY2021Q3	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	603787000	USD
CY2021Q3	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	17842000	USD
CY2021Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	4887496000	USD
CY2020Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	972227000	USD
CY2020Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	647339000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	525260000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	540927000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	436909000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	1016093000	USD
CY2020Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	599620000	USD
CY2020Q4	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	24752000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	4763127000	USD
CY2021Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	6000	investmentSecurity
CY2021Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	4153000	USD
CY2021Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	4147000	USD
CY2021Q3	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureAdditionalProvision	156000	USD
CY2021Q3	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Charge Offs Or Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureChargeOffsOrAdditionalProvision	-5000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	6000	investmentSecurity
CY2021Q3	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	1000	investmentSecurity
CY2021Q3	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	13000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	2741000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2655000	USD
CY2020Q3	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureAdditionalProvision	381000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	4000	investmentSecurity
CY2020Q3	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	1685000	USD
CY2020Q3	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Charge Offs Or Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureChargeOffsOrAdditionalProvision	0	USD
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	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	5000	investmentSecurity
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CY2021Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1328000	USD
CY2020Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1284000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	3854000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	3869000	USD
CY2021Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	57000	USD
CY2020Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	67000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	180000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	195000	USD
CY2021Q3	us-gaap	Variable Lease Cost VariableLeaseCost	8000	USD
CY2020Q3	us-gaap	Variable Lease Cost VariableLeaseCost	-1000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	5000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	6000	USD
CY2021Q3	us-gaap	Sublease Income SubleaseIncome	0	USD
CY2020Q3	us-gaap	Sublease Income SubleaseIncome	33000	USD
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CY2021Q3	us-gaap	Lease Cost LeaseCost	1393000	USD
CY2020Q3	us-gaap	Lease Cost LeaseCost	1317000	USD
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CY2021Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	1261000	USD
CY2020Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	1236000	USD
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CY2021Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1575000	USD
CY2020Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	93000	USD
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CY2021Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y3M18D
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y
CY2021Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0292
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0310
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1215000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	4714000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4071000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3716000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3132000	USD
CY2021Q3	tcbk	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	15057000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	31905000	USD
CY2021Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	4615000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	27290000	USD
CY2021Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2943016000	USD
CY2020Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2581517000	USD
CY2021Q3	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	1519426000	USD
CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	1414908000	USD
CY2021Q3	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2447706000	USD
CY2020Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2164942000	USD
CY2021Q3	tcbk	Time Deposits250000 Or More TimeDeposits250000OrMore	58503000	USD
CY2020Q4	tcbk	Time Deposits250000 Or More TimeDeposits250000OrMore	73147000	USD
CY2021Q3	tcbk	Other Time Certificates Deposits OtherTimeCertificatesDeposits	268171000	USD
CY2020Q4	tcbk	Other Time Certificates Deposits OtherTimeCertificatesDeposits	271420000	USD
CY2021Q3	us-gaap	Deposits Deposits	7236822000	USD
CY2020Q4	us-gaap	Deposits Deposits	6505934000	USD
CY2021Q3	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	1110000	USD
CY2020Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	985000	USD
CY2021Q3	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	7058000	USD
CY2020Q3	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	6913000	USD
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CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	128500	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.72
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CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	122825	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.80
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	122825	shares
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.80
CY2021Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	3144000	USD
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	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Remaining Contractual Terms ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms	P1Y7M6D
	tcbk	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Release In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsReleaseInPeriod	0	shares
	tcbk	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Increase In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsIncreaseInPeriod	149645	shares
CY2021Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	11265000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10469000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	32671000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	27763000	USD
CY2021Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	644000	USD
CY2020Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	773000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2062000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2203000	USD
CY2021Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	957000	USD
CY2020Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	667000	USD
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	2738000	USD
CY2021Q3	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-14000	USD
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	2244000	USD
CY2021Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1814000	USD
CY2020Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	3035000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	7908000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	5662000	USD
CY2021Q3	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	183000	USD
CY2020Q3	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	175000	USD
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	542000	USD
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	495000	USD
CY2021Q3	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	107000	USD
CY2020Q3	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	91000	USD
	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	342000	USD
	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	303000	USD
CY2021Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	7000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	7000	USD
CY2020Q3	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	0	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-59000	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	72000	USD
CY2021Q3	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	139000	USD
CY2020Q3	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	-80000	USD
	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	958000	USD
	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	-135000	USD
CY2021Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	3830000	USD
CY2020Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	4668000	USD
	us-gaap	Noninterest Income Other NoninterestIncomeOther	14491000	USD
	us-gaap	Noninterest Income Other NoninterestIncomeOther	10851000	USD
CY2021Q3	us-gaap	Noninterest Income NoninterestIncome	15095000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	15137000	USD
	us-gaap	Noninterest Income NoninterestIncome	47162000	USD
	us-gaap	Noninterest Income NoninterestIncome	38614000	USD
CY2021Q3	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	17673000	USD
CY2020Q3	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	18754000	USD
CY2020Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	8383000	USD
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	16939000	USD
	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	50721000	USD
	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	53654000	USD
CY2021Q3	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	3123000	USD
CY2020Q3	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	2184000	USD
	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	11025000	USD
	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	7680000	USD
CY2021Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	5478000	USD
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	22314000	USD
CY2021Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	26274000	USD
CY2020Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	29321000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	78685000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	83648000	USD
CY2021Q3	us-gaap	Occupancy Net OccupancyNet	3771000	USD
CY2020Q3	us-gaap	Occupancy Net OccupancyNet	3440000	USD
	us-gaap	Occupancy Net OccupancyNet	11197000	USD
	us-gaap	Occupancy Net OccupancyNet	10713000	USD
CY2021Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3689000	USD
CY2020Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3561000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	10092000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	10585000	USD
CY2021Q3	us-gaap	Equipment Expense EquipmentExpense	1336000	USD
CY2020Q3	us-gaap	Equipment Expense EquipmentExpense	1549000	USD
	us-gaap	Equipment Expense EquipmentExpense	4060000	USD
	us-gaap	Equipment Expense EquipmentExpense	4411000	USD
CY2021Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1409000	USD
CY2020Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1431000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4271000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4293000	USD
CY2021Q3	us-gaap	Advertising Expense AdvertisingExpense	966000	USD
CY2020Q3	us-gaap	Advertising Expense AdvertisingExpense	869000	USD
	us-gaap	Advertising Expense AdvertisingExpense	2080000	USD
	us-gaap	Advertising Expense AdvertisingExpense	2065000	USD
	tcbk	Network Charges NetworkCharges	4489000	USD
CY2021Q3	tcbk	Network Charges NetworkCharges	1692000	USD
CY2020Q3	tcbk	Network Charges NetworkCharges	1314000	USD
	tcbk	Network Charges NetworkCharges	3897000	USD
CY2021Q3	us-gaap	Professional Fees ProfessionalFees	1090000	USD
CY2020Q3	us-gaap	Professional Fees ProfessionalFees	955000	USD
	us-gaap	Professional Fees ProfessionalFees	2730000	USD
	us-gaap	Professional Fees ProfessionalFees	2399000	USD
CY2021Q3	us-gaap	Communication Communication	574000	USD
CY2020Q3	us-gaap	Communication Communication	619000	USD
	us-gaap	Communication Communication	1719000	USD
	us-gaap	Communication Communication	1983000	USD
CY2021Q3	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	673000	USD
CY2020Q3	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	538000	USD
	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	1903000	USD
	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	993000	USD
CY2021Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	651000	USD
CY2020Q3	us-gaap	Postage Expense PostageExpense	118000	USD
CY2020Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	651000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2021Q3	us-gaap	Postage Expense PostageExpense	156000	USD
	us-gaap	Postage Expense PostageExpense	478000	USD
	us-gaap	Postage Expense PostageExpense	691000	USD
CY2021Q3	tcbk	Operational Losses OperationalLosses	244000	USD
CY2020Q3	tcbk	Operational Losses OperationalLosses	154000	USD
	tcbk	Operational Losses OperationalLosses	665000	USD
	tcbk	Operational Losses OperationalLosses	559000	USD
CY2021Q3	tcbk	Courier Service CourierService	286000	USD
CY2020Q3	tcbk	Courier Service CourierService	345000	USD
	tcbk	Courier Service CourierService	868000	USD
	tcbk	Courier Service CourierService	1013000	USD
CY2021Q3	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans1 GainLossOnForeclosedAssetsExcludingTransferOfLoans1	144000	USD
CY2020Q3	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans1 GainLossOnForeclosedAssetsExcludingTransferOfLoans1	0	USD
	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans1 GainLossOnForeclosedAssetsExcludingTransferOfLoans1	210000	USD
	tcbk	Gain Loss On Foreclosed Assets Excluding Transfer Of Loans1 GainLossOnForeclosedAssetsExcludingTransferOfLoans1	57000	USD
CY2021Q3	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	19000	USD
CY2020Q3	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-22000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	445000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-37000	USD
CY2021Q3	tcbk	Other Operating Expenses OtherOperatingExpenses	3159000	USD
CY2020Q3	tcbk	Other Operating Expenses OtherOperatingExpenses	2478000	USD
	tcbk	Other Operating Expenses OtherOperatingExpenses	8363000	USD
	tcbk	Other Operating Expenses OtherOperatingExpenses	9783000	USD
CY2021Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	19533000	USD
CY2020Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	17393000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	52911000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	53365000	USD
CY2021Q3	us-gaap	Noninterest Expense NoninterestExpense	45807000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	46714000	USD
	us-gaap	Noninterest Expense NoninterestExpense	131596000	USD
	us-gaap	Noninterest Expense NoninterestExpense	137013000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	27422000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	17606000	USD
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	29714000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	29764000	shares
CY2021Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	137000	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	80000	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	29851000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	29844000	shares
CY2021Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2020Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
	us-gaap	Net Income Loss NetIncomeLoss	89433000	USD
	us-gaap	Net Income Loss NetIncomeLoss	41157000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	29720000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	29971000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	167000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	112000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	29887000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	30083000	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
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-4440000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4957000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8553000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	10798000	USD
CY2021Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	3727000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	12280000	USD
	tcbk	Number Of Investment Securities Classified As Level3 NumberOfInvestmentSecuritiesClassifiedAsLevel3	0	investmentSecurity
	tcbk	Loan Charged Off Carrying Value LoanChargedOffCarryingValue	0	USD

Files In Submission

Name	View Source	Status
0000356171-21-000065-index-headers.html	Edgar Link	pending
0000356171-21-000065-index.html	Edgar Link	pending
0000356171-21-000065.txt	Edgar Link	pending
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tcbk-20210930_cal.xml	Edgar Link	unprocessable
tcbk-20210930_def.xml	Edgar Link	unprocessable
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tcbk-20210930_htm.xml	Edgar Link	completed
tcbk-20210930_lab.xml	Edgar Link	unprocessable
tcbk-20210930_pre.xml	Edgar Link	unprocessable

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$TCBK
Trico Bancshares Stock $tcbk

2021 Q4 Form 10-Q Financial Statement

#000035617121000065 Filed on November 08, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBK Trico Bancshares Stock $tcbk

2021 Q4 Form 10-Q Financial Statement

#000035617121000065 Filed on November 08, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBK
Trico Bancshares Stock $tcbk