$TCBK
Trico Bancshares Stock $tcbk

$tcbk Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-Q Financial Statement

#000035617120000084 Filed on November 06, 2020

Income Statement

Concept	2020 Q4	2020 Q3	2019 Q3
Revenue	$68.08M	$65.44M	$68.89M
YoY Change	0.24%	-5.01%	6.72%
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	$3.100M	$3.000M	$3.100M
YoY Change	3.33%	-3.23%	0.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$1.659M	$1.984M	$4.201M
YoY Change	-55.43%	-52.77%	3.35%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$32.41M	$24.23M	$32.78M
YoY Change	2.18%	-26.09%	44.75%
Income Tax	$8.750M	$6.622M	$9.386M
% Of Pretax Income	27.0%	27.33%	28.63%
Net Earnings	$23.66M	$17.61M	$23.40M
YoY Change	3.35%	-24.74%	44.68%
Net Earnings / Revenue	34.75%	26.9%	33.96%
Basic Earnings Per Share		$0.59	$0.77
Diluted Earnings Per Share	$0.79	$0.59	$0.76
COMMON SHARES
Basic Shares Outstanding	29.77M shares	29.76M shares	30.51M shares
Diluted Shares Outstanding		29.84M shares	30.63M shares

Balance Sheet

Concept	2020 Q4	2020 Q3	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$669.6M	$652.6M	$259.0M
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	$83.73M	$84.86M	$87.42M
YoY Change	-3.85%	-2.94%	-2.09%
Goodwill	$220.9M	$220.9M	$220.9M
YoY Change	0.0%	0.0%	-0.05%
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	$7.640B	$7.450B	$6.385B
YoY Change	18.05%	16.68%	1.04%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.400M	$1.600M	$2.800M
YoY Change	-41.67%	-42.86%	64.71%
Accrued Expenses	$28.00M	$28.90M	$28.50M
YoY Change	1.82%	1.4%	54.89%
Deferred Revenue
YoY Change
Short-Term Debt	$26.90M	$27.10M	$16.40M
YoY Change	45.41%	65.24%	-94.2%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$29.40M	$30.50M	$31.30M
YoY Change	-1.67%	-2.56%	55.72%
LONG-TERM LIABILITIES
Long-Term Debt	$57.60M	$57.50M	$57.20M
YoY Change	0.7%	0.52%	0.35%
Other Long-Term Liabilities	$94.60M	$91.90M	$87.90M
YoY Change	2.83%	4.55%	953.33%
Total Long-Term Liabilities	$152.2M	$149.4M	$145.1M
YoY Change	2.01%	2.96%	1638.77%
TOTAL LIABILITIES
Total Short-Term Liabilities	$29.40M	$30.50M	$31.30M
Total Long-Term Liabilities	$152.2M	$149.4M	$145.1M
Total Liabilities	$6.714B	$6.548B	$5.488B
YoY Change	20.66%	19.3%	-0.52%
SHAREHOLDERS EQUITY
Retained Earnings	$382.0M	$365.6M	$351.8M
YoY Change	3.86%	3.94%	22.32%
Common Stock	$530.8M	$531.1M	$543.4M
YoY Change	-2.42%	-2.27%	0.35%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$925.1M	$902.3M	$896.7M
YoY Change
Total Liabilities & Shareholders Equity	$7.640B	$7.450B	$6.385B
YoY Change	18.05%	16.68%	1.04%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2019 Q3
OPERATING ACTIVITIES
Net Income	$23.66M	$17.61M	$23.40M
YoY Change	3.35%	-24.74%	44.68%
Depreciation, Depletion And Amortization	$3.100M	$3.000M	$3.100M
YoY Change	3.33%	-3.23%	0.0%
Cash From Operating Activities	$36.20M	$14.90M	$42.40M
YoY Change	36.6%	-64.86%	57.04%
INVESTING ACTIVITIES
Capital Expenditures	-$500.0K	-$1.000M	-$500.0K
YoY Change	-58.33%	100.0%	-68.75%
Acquisitions
YoY Change
Other Investing Activities	-$175.9M	-$141.4M	$94.10M
YoY Change	135.16%	-250.27%	180.06%
Cash From Investing Activities	-$176.4M	-$142.4M	$93.60M
YoY Change	132.11%	-252.14%	193.42%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	157.2M	74.30M	-52.60M
YoY Change	134.63%	-241.25%	220.73%
NET CHANGE
Cash From Operating Activities	36.20M	14.90M	42.40M
Cash From Investing Activities	-176.4M	-142.4M	93.60M
Cash From Financing Activities	157.2M	74.30M	-52.60M
Net Change In Cash	17.00M	-53.20M	83.40M
YoY Change	-2.86%	-163.79%	96.24%
FREE CASH FLOW
Cash From Operating Activities	$36.20M	$14.90M	$42.40M
Capital Expenditures	-$500.0K	-$1.000M	-$500.0K
Free Cash Flow	$36.70M	$15.90M	$42.90M
YoY Change	32.49%	-62.94%	50.0%

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	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Entity Central Index Key EntityCentralIndexKey	0000356171
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	000-10661
	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
	dei	Entity Shell Company EntityShellCompany	false
CY2020Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	29769389	shares
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CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	92816000	USD
CY2020Q3	tcbk	Cash At Federal Reserve And Other Banks CashAtFederalReserveAndOtherBanks	581548000	USD
CY2019Q4	tcbk	Cash At Federal Reserve And Other Banks CashAtFederalReserveAndOtherBanks	183691000	USD
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	us-gaap	Noninterest Income NoninterestIncome	39334000	USD
CY2020Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	29321000	USD
CY2019Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	26899000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13786000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	83648000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	78746000	USD
CY2020Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	17393000	USD
CY2019Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	19445000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	53365000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	59747000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	46714000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	46344000	USD
	us-gaap	Noninterest Expense NoninterestExpense	137013000	USD
	us-gaap	Noninterest Expense NoninterestExpense	138493000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	24228000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	32781000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	54943000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	95106000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6622000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9386000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25924000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	17606000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	23395000	USD
	us-gaap	Net Income Loss NetIncomeLoss	41157000	USD
	us-gaap	Net Income Loss NetIncomeLoss	69182000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.77
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.37
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.27
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.76
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.37
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.25
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.22
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.22
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.66
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	17606000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	23395000	USD
	us-gaap	Net Income Loss NetIncomeLoss	41157000	USD
	us-gaap	Net Income Loss NetIncomeLoss	69182000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	3266000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	3697000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	7069000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	19378000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1691000	USD
CY2019Q3	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
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2020Q3	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax	0	USD
CY2019Q3	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	912000	USD
	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	4957000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3697000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	10798000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19378000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	22563000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	27092000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	51955000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	88560000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	875886000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	23395000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3697000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	146000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	296000	USD
CY2019Q3	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	102000	USD
CY2019Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	147000	USD
CY2019Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6710000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	896665000	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
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	827373000	USD
	us-gaap	Net Income Loss NetIncomeLoss	69182000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	19378000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2646000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	863000	USD
	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	350000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	4842000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	18285000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	896665000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	906570000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	893587000	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
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	547000	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
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	25545000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	19758000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	902262000	USD
	us-gaap	Profit Loss ProfitLoss	41157000	USD
	us-gaap	Profit Loss ProfitLoss	69182000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	4778000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	5273000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4293000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4293000	USD
	tcbk	Provision For Reversal Of Benefit From Loan Losses Expensed ProvisionForReversalOfBenefitFromLoanLossesExpensed	37963000	USD
	tcbk	Provision For Reversal Of Benefit From Loan Losses Expensed ProvisionForReversalOfBenefitFromLoanLossesExpensed	-1392000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1747000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2050000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	7000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	107000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	152968000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	92002000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	156347000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	89506000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	5662000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2223000	USD
	tcbk	Change In Market Value Of Mortgage Servicing Rights ChangeInMarketValueOfMortgageServicingRights	2258000	USD
	tcbk	Change In Market Value Of Mortgage Servicing Rights ChangeInMarketValueOfMortgageServicingRights	1652000	USD
	tcbk	Provision For Benefit From Losses On Foreclosed Assets ProvisionForBenefitFromLossesOnForeclosedAssets	0	USD
	tcbk	Provision For Benefit From Losses On Foreclosed Assets ProvisionForBenefitFromLossesOnForeclosedAssets	56000	USD
	tcbk	Gain On Transfer Of Loans To Foreclosed Assets GainOnTransferOfLoansToForeclosedAssets	-128000	USD
	tcbk	Gain On Transfer Of Loans To Foreclosed Assets GainOnTransferOfLoansToForeclosedAssets	151000	USD
	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	57000	USD
	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	246000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3716000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3683000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-37000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-82000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2203000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2294000	USD
	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	0	USD
	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	831000	USD
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	72000	USD
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	100000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	1476000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	1213000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	660000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-1207000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-836000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	850000	USD
	tcbk	Increase Decrease In Amortization Of Operating Lease Right Of Use Asset IncreaseDecreaseInAmortizationOfOperatingLeaseRightOfUseAsset	4070000	USD
	tcbk	Increase Decrease In Amortization Of Operating Lease Right Of Use Asset IncreaseDecreaseInAmortizationOfOperatingLeaseRightOfUseAsset	-463000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-9489000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	4394000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	78584000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	76266000	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 Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	69278000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	64054000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	50738000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	229000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	125247000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	298018000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	37253000	USD
	tcbk	Payment For Loan And Lease Originations And Principal Collections PaymentForLoanAndLeaseOriginationsAndPrincipalCollections	518564000	USD
	tcbk	Payment For Loan And Lease Originations And Principal Collections PaymentForLoanAndLeaseOriginationsAndPrincipalCollections	159991000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	570000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	1255000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2340000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3070000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-639947000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	46204000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	973594000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-71059000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	8601000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	584000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	24999000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2196000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	19758000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	18285000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	937438000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-90956000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	376075000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	652582000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	31514000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	276507000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	227533000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	259047000	USD
	tcbk	Unrealized Gain Loss On Securities Available For Sale UnrealizedGainLossOnSecuritiesAvailableForSale	10036000	USD
	tcbk	Unrealized Gain Loss On Securities Available For Sale UnrealizedGainLossOnSecuritiesAvailableForSale	27511000	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
	tcbk	Market Value Of Shares Tendered By Employees In Lieu Of Cash To Pay For Exercise Of Options And Or Related Taxes MarketValueOfSharesTenderedByEmployeesInLieuOfCashToPayForExerciseOfOptionsAndOrRelatedTaxes	4842000	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	4161000	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	32162000	USD
	tcbk	Loans Transferred To Foreclosed Assets LoansTransferredToForeclosedAssets	157000	USD
	tcbk	Loans Transferred To Foreclosed Assets LoansTransferredToForeclosedAssets	331000	USD
	us-gaap	Interest Paid Net InterestPaidNet	8634000	USD
	us-gaap	Interest Paid Net InterestPaidNet	10803000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	26000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	25950000	USD
	tcbk	Number Of Subsidiary Business Trust NumberOfSubsidiaryBusinessTrust	5	business_trust
CY2020Q3	tcbk	Number Of Loan Production Offices NumberOfLoanProductionOffices	2	business_trust
CY2020Q3	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	1727699	USD
	us-gaap	Use Of Estimates UseOfEstimates	<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:12pt"><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, 2019 (the “2019 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	The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout northern and central 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.
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	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.
	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: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 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:id3VybDovL2RvY3MudjEvZG9jOjYxNDFjZGRlNTBhNDRjZjVhZGY1Y2VkZmQzODI2ZWJkL3NlYzo2MTQxY2RkZTUwYTQ0Y2Y1YWRmNWNlZGZkMzgyNmViZF8zMS9mcmFnOjJlMGJiN2VhNTExMzRhY2Q5NjEwYTc4YzhmN2EwNTRjL3RleHRyZWdpb246MmUwYmI3ZWE1MTEzNGFjZDk2MTBhNzhjOGY3YTA1NGNfMTE1Mzk_92df5475-5a2f-47f2-89d6-3f5e9dd0294b">five</span> to ten years with amortization periods from <span style="-sec-ix-hidden:id3VybDovL2RvY3MudjEvZG9jOjYxNDFjZGRlNTBhNDRjZjVhZGY1Y2VkZmQzODI2ZWJkL3NlYzo2MTQxY2RkZTUwYTQ0Y2Y1YWRmNWNlZGZkMzgyNmViZF8zMS9mcmFnOjJlMGJiN2VhNTExMzRhY2Q5NjEwYTc4YzhmN2EwNTRjL3RleHRyZWdpb246MmUwYmI3ZWE1MTEzNGFjZDk2MTBhNzhjOGY3YTA1NGNfMTE1ODU_b5e80291-7571-4f40-8b09-e0d9854b0ebb">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:id3VybDovL2RvY3MudjEvZG9jOjYxNDFjZGRlNTBhNDRjZjVhZGY1Y2VkZmQzODI2ZWJkL3NlYzo2MTQxY2RkZTUwYTQ0Y2Y1YWRmNWNlZGZkMzgyNmViZF8zMS9mcmFnOjJlMGJiN2VhNTExMzRhY2Q5NjEwYTc4YzhmN2EwNTRjL3RleHRyZWdpb246MmUwYmI3ZWE1MTEzNGFjZDk2MTBhNzhjOGY3YTA1NGNfMTI0NDk_826299d4-838d-4b2e-9a2a-aa3e0240eb4d">five</span> to ten years with amortization periods from <span style="-sec-ix-hidden:id3VybDovL2RvY3MudjEvZG9jOjYxNDFjZGRlNTBhNDRjZjVhZGY1Y2VkZmQzODI2ZWJkL3NlYzo2MTQxY2RkZTUwYTQ0Y2Y1YWRmNWNlZGZkMzgyNmViZF8zMS9mcmFnOjJlMGJiN2VhNTExMzRhY2Q5NjEwYTc4YzhmN2EwNTRjL3RleHRyZWdpb246MmUwYmI3ZWE1MTEzNGFjZDk2MTBhNzhjOGY3YTA1NGNfMTI0OTU_680043b6-a324-4704-9122-8ec5ce631474">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 </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%">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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CY2020Q3	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	20767000	USD
CY2019Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	8927000	USD
CY2020Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-28570000	USD
CY2019Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-35432000	USD
CY2020Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	4826338000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	4307366000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	87575000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	30616000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	79739000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	194000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	381000	USD
CY2020Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	7649000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	87575000	USD
CY2020Q2	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	3000000	USD
CY2020Q3	tcbk	Off Balance Sheet Credit Loss Writeoff OffBalanceSheetCreditLossWriteoff	0	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 Writeoff CreditLossAllowanceForCreditLossWriteoff	194000	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
	tcbk	Off Balance Sheet Credit Loss Recovery OffBalanceSheetCreditLossRecovery	0	USD
	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
	tcbk	Credit Loss Allowance For Credit Loss Recovery CreditLossAllowanceForCreditLossRecovery	1503000	USD
	tcbk	Credit Loss Expense Reversal CreditLossExpenseReversal	37963000	USD
CY2020Q3	tcbk	Credit Loss Allowance For Credit Loss CreditLossAllowanceForCreditLoss	90575000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	32582000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	3639000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3363000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-1690000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	30616000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	32868000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1522000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	520000	USD
CY2019Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-329000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	31537000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	32582000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2541000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2888000	USD
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-1392000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	31537000	USD
CY2020Q3	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	877572000	USD
CY2020Q3	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	669648000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	547226000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	568226000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	460575000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	1078611000	USD
CY2020Q3	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	597909000	USD
CY2020Q3	tcbk	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	26571000	USD
CY2020Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	4826338000	USD
CY2019Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	685742000	USD
CY2019Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	577102000	USD
CY2019Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	607704000	USD
CY2019Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	517037000	USD
CY2019Q4	tcbk	Financing Receivable Originated Four Years Or More Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsOrMoreBeforeLatestFiscalYear	1248499000	USD
CY2019Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	640176000	USD
CY2019Q4	tcbk	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	31106000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	4307366000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	6000	investment_security
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	investment_security
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
CY2019Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	8000	investment_security
CY2019Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	706000	USD
CY2019Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	715000	USD
CY2019Q3	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureAdditionalProvision	28000	USD
CY2019Q3	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0	investment_security
CY2019Q3	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	USD
CY2019Q3	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Charge Offs Or Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureChargeOffsOrAdditionalProvision	0	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	12	investment_security
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	3420000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	3393000	USD
	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureAdditionalProvision	402000	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	5	investment_security
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	2579000	USD
	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Charge Offs Or Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureChargeOffsOrAdditionalProvision	0	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	18000	investment_security
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	2851000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2829000	USD
	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureAdditionalProvision	59000	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	1	investment_security
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	7000	USD
	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Charge Offs Or Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureChargeOffsOrAdditionalProvision	0	USD
	tcbk	Lessee Operating Lease Number Of Renewal Term Options LesseeOperatingLeaseNumberOfRenewalTermOptions	1	renewal_option
CY2020Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1284000	USD
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1306000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	3869000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	3924000	USD
CY2020Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	67000	USD
CY2019Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	65000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	195000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	194000	USD
CY2020Q3	us-gaap	Variable Lease Cost VariableLeaseCost	-1000	USD
CY2019Q3	us-gaap	Variable Lease Cost VariableLeaseCost	-13000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	6000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	-33000	USD
CY2020Q3	us-gaap	Sublease Income SubleaseIncome	33000	USD
CY2019Q3	us-gaap	Sublease Income SubleaseIncome	32000	USD
	us-gaap	Sublease Income SubleaseIncome	102000	USD
	us-gaap	Sublease Income SubleaseIncome	98000	USD
CY2020Q3	us-gaap	Lease Cost LeaseCost	1317000	USD
CY2019Q3	us-gaap	Lease Cost LeaseCost	1326000	USD
	us-gaap	Lease Cost LeaseCost	3968000	USD
	us-gaap	Lease Cost LeaseCost	3987000	USD
CY2020Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	1236000	USD
CY2019Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	1236000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3716000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3683000	USD
CY2020Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	93000	USD
CY2019Q3	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	4161000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	32162000	USD
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y
CY2019Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y6M
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0310
CY2019Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0318
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1144000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4566000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4230000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3554000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3278000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	17457000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	34229000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	5335000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	28894000	USD
CY2020Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	2517819000	USD
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1832665000	USD
CY2020Q3	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	1346716000	USD
CY2019Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	1242274000	USD
CY2020Q3	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	2099780000	USD
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1851549000	USD
CY2020Q3	tcbk	Time Deposits250000 Or More TimeDeposits250000OrMore	96377000	USD
	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	25361000	USD
CY2019Q4	tcbk	Time Deposits250000 Or More TimeDeposits250000OrMore	129061000	USD
CY2020Q3	tcbk	Other Time Certificates Deposits OtherTimeCertificatesDeposits	279896000	USD
CY2019Q4	tcbk	Other Time Certificates Deposits OtherTimeCertificatesDeposits	311445000	USD
CY2020Q3	us-gaap	Deposits Deposits	6340588000	USD
CY2019Q4	us-gaap	Deposits Deposits	5366994000	USD
CY2020Q3	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	1139000	USD
CY2019Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	1550000	USD
CY2020Q3	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	6913000	USD
CY2019Q3	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	7011000	USD
	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	46361000	USD
CY2019Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	1525000	shares
CY2019Q4	tcbk	Repurchased Shares Percentage Of Total Shares Outstanding RepurchasedSharesPercentageOfTotalSharesOutstanding	5.0
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.72
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	160500	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.60
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	tcbk	Share Based Compensation Arrangements By Share Based Payment Award Options Outstanding Option Price Per Share Of Options Granted ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOutstandingOptionPricePerShareOfOptionsGranted	0
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	32000	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	17.10
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
	tcbk	Share Based Compensation Arrangements By Share Based Payment Award Options Outstanding Option Price Per Share Of Options Forfeited ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsOutstandingOptionPricePerShareOfOptionsForfeited	0
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	128500	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	128500	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.72
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	870000	USD
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y2M12D
	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	122423	shares
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10469000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10590000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	27763000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	29788000	USD
CY2020Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	773000	USD
CY2019Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	773000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2203000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2294000	USD
CY2020Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	667000	USD
CY2019Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	721000	USD
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	2244000	USD
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	2102000	USD
CY2020Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	3035000	USD
CY2019Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1236000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	5662000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2223000	USD
CY2020Q3	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	175000	USD
CY2019Q3	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	172000	USD
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	495000	USD
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	631000	USD
CY2020Q3	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	91000	USD
CY2019Q3	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	126000	USD
	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	303000	USD
	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	401000	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	7000	USD
CY2019Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	107000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	7000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	107000	USD
CY2020Q3	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	0	USD
CY2019Q3	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	22000	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	72000	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	100000	USD
CY2020Q3	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	-80000	USD
CY2019Q3	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	361000	USD
	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	-135000	USD
	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	1688000	USD
CY2020Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	4668000	USD
CY2019Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	3518000	USD
	us-gaap	Noninterest Income Other NoninterestIncomeOther	10851000	USD
	us-gaap	Noninterest Income Other NoninterestIncomeOther	9546000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	15137000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	14108000	USD
	us-gaap	Noninterest Income NoninterestIncome	38614000	USD
	us-gaap	Noninterest Income NoninterestIncome	39334000	USD
CY2020Q3	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	18754000	USD
CY2019Q3	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	17656000	USD
	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	53654000	USD
	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	51624000	USD
CY2020Q3	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	2184000	USD
CY2019Q3	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	3791000	USD
	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	7680000	USD
	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	10064000	USD
CY2020Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	8383000	USD
CY2019Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	5452000	USD
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	22314000	USD
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	17058000	USD
CY2020Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	29321000	USD
CY2019Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	26899000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	83648000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	78746000	USD
CY2020Q3	us-gaap	Occupancy Net OccupancyNet	3440000	USD
CY2019Q3	us-gaap	Occupancy Net OccupancyNet	3711000	USD
	us-gaap	Occupancy Net OccupancyNet	10713000	USD
	us-gaap	Occupancy Net OccupancyNet	11223000	USD
CY2020Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3561000	USD
CY2019Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3411000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	10585000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	10114000	USD
CY2020Q3	us-gaap	Equipment Expense EquipmentExpense	1549000	USD
CY2019Q3	us-gaap	Equipment Expense EquipmentExpense	1679000	USD
	us-gaap	Equipment Expense EquipmentExpense	4411000	USD
	us-gaap	Equipment Expense EquipmentExpense	5298000	USD
CY2020Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1431000	USD
CY2019Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1431000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4293000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4293000	USD
CY2020Q3	us-gaap	Advertising Expense AdvertisingExpense	869000	USD
CY2019Q3	us-gaap	Advertising Expense AdvertisingExpense	1358000	USD
	us-gaap	Advertising Expense AdvertisingExpense	2065000	USD
	us-gaap	Advertising Expense AdvertisingExpense	4222000	USD
CY2020Q3	tcbk	Network Charges NetworkCharges	1314000	USD
CY2019Q3	tcbk	Network Charges NetworkCharges	1343000	USD
	tcbk	Network Charges NetworkCharges	3897000	USD
	tcbk	Network Charges NetworkCharges	3936000	USD
CY2020Q3	us-gaap	Professional Fees ProfessionalFees	955000	USD
CY2019Q3	us-gaap	Professional Fees ProfessionalFees	999000	USD
	us-gaap	Professional Fees ProfessionalFees	2399000	USD
	us-gaap	Professional Fees ProfessionalFees	2895000	USD
CY2020Q3	us-gaap	Communication Communication	619000	USD
CY2019Q3	us-gaap	Communication Communication	867000	USD
	us-gaap	Communication Communication	1983000	USD
	us-gaap	Communication Communication	2437000	USD
CY2020Q3	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	538000	USD
CY2019Q3	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	94000	USD
	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	993000	USD
	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	1095000	USD
CY2020Q3	us-gaap	Postage Expense PostageExpense	118000	USD
CY2019Q3	us-gaap	Postage Expense PostageExpense	438000	USD
	us-gaap	Postage Expense PostageExpense	691000	USD
	us-gaap	Postage Expense PostageExpense	1063000	USD
CY2020Q3	tcbk	Operational Losses OperationalLosses	154000	USD
CY2019Q3	tcbk	Operational Losses OperationalLosses	228000	USD
	tcbk	Operational Losses OperationalLosses	559000	USD
	tcbk	Operational Losses OperationalLosses	679000	USD
CY2020Q3	tcbk	Courier Service CourierService	345000	USD
CY2019Q3	tcbk	Courier Service CourierService	357000	USD
	tcbk	Courier Service CourierService	1013000	USD
	tcbk	Courier Service CourierService	1039000	USD
CY2020Q3	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	0	USD
CY2019Q3	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	50000	USD
	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	57000	USD
	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	246000	USD
CY2020Q3	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-22000	USD
CY2019Q3	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-2000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-37000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-82000	USD
CY2020Q3	tcbk	Other Operating Expenses OtherOperatingExpenses	2478000	USD
CY2019Q3	tcbk	Other Operating Expenses OtherOperatingExpenses	3577000	USD
	tcbk	Other Operating Expenses OtherOperatingExpenses	9783000	USD
	tcbk	Other Operating Expenses OtherOperatingExpenses	11617000	USD
CY2020Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	17393000	USD
CY2019Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	19445000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	53365000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	59747000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	46714000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	46344000	USD
	us-gaap	Noninterest Expense NoninterestExpense	137013000	USD
	us-gaap	Noninterest Expense NoninterestExpense	138493000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	17606000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	23395000	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	29764000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	30509000	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	80000	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	120000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	29844000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	30629000	shares
CY2020Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2019Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	42000	shares
	us-gaap	Net Income Loss NetIncomeLoss	41157000	USD
	us-gaap	Net Income Loss NetIncomeLoss	69182000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	29971000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	30464000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	112000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	179000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	30083000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	30643000	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	42000	shares
CY2020Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	4645000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	5355000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	10043000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	27618000	USD
CY2020Q3	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-7000	USD
CY2019Q3	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-107000	USD
	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-7000	USD
	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-107000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	4638000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	5248000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	10036000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	27511000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	1372000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	1551000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	2967000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	8133000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	3266000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	3697000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	7069000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	19378000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-1936000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	89000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-2607000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	266000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-14000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-13000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-41000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-40000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-478000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-102000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-1434000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-306000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	464000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	89000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	1393000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	266000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-2400000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-4000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-709000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-1183000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1691000	USD
CY2019Q3	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
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2020Q3	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Before Reclassification And Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsBeforeReclassificationAndTax	0	USD
CY2019Q3	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Before Reclassification And Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsBeforeReclassificationAndTax	0	USD
	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Before Reclassification And Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsBeforeReclassificationAndTax	912000	USD
	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Before Reclassification And Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsBeforeReclassificationAndTax	0	USD
CY2020Q3	tcbk	Other Comprehensive Income Loss Changes In Joint Beneficiary Agreement Liability Tax OtherComprehensiveIncomeLossChangesInJointBeneficiaryAgreementLiabilityTax	0	USD
CY2019Q3	tcbk	Other Comprehensive Income Loss Changes In Joint Beneficiary Agreement Liability Tax OtherComprehensiveIncomeLossChangesInJointBeneficiaryAgreementLiabilityTax	0	USD
	tcbk	Other Comprehensive Income Loss Changes In Joint Beneficiary Agreement Liability Tax OtherComprehensiveIncomeLossChangesInJointBeneficiaryAgreementLiabilityTax	0	USD
	tcbk	Other Comprehensive Income Loss Changes In Joint Beneficiary Agreement Liability Tax OtherComprehensiveIncomeLossChangesInJointBeneficiaryAgreementLiabilityTax	0	USD
CY2020Q3	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax	0	USD
CY2019Q3	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	912000	USD
	tcbk	Other Comprehensive Income Loss Joint Beneficiary Agreement Liability Adjustments Reclassification Net Of Tax OtherComprehensiveIncomeLossJointBeneficiaryAgreementLiabilityAdjustmentsReclassificationNetOfTax	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	4957000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3697000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	10798000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19378000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	5576000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5222000	USD
	tcbk	Number Of Investment Securities Classified As Level3 NumberOfInvestmentSecuritiesClassifiedAsLevel3	0	investment_security
	tcbk	Loan Charged Off Carrying Value LoanChargedOffCarryingValue	0	USD

Files In Submission

Name	View Source	Status
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0000356171-20-000084-index.html	Edgar Link	pending
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Trico Bancshares Stock $tcbk

2020 Q4 Form 10-Q Financial Statement

#000035617120000084 Filed on November 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBK Trico Bancshares Stock $tcbk

2020 Q4 Form 10-Q Financial Statement

#000035617120000084 Filed on November 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBK
Trico Bancshares Stock $tcbk