$TCBK
Trico Bancshares Stock $tcbk

$tcbk Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-Q Financial Statement

#000162828019013846 Filed on November 08, 2019

Income Statement

Concept	2019 Q4	2019 Q3	2018 Q3
Revenue	$67.92M	$68.89M	$64.55M
YoY Change	-0.22%	6.72%	40.6%
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	$3.000M	$3.100M	$3.100M
YoY Change	-14.29%	0.0%	40.91%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$3.722M	$4.201M	$4.065M
YoY Change	-8.39%	3.35%	122.25%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$31.72M	$32.78M	$22.65M
YoY Change	3.83%	44.75%	19.02%
Income Tax	$8.826M	$9.386M	$6.476M
% Of Pretax Income	27.83%	28.63%	28.6%
Net Earnings	$22.89M	$23.40M	$16.17M
YoY Change	-1.38%	44.68%	35.92%
Net Earnings / Revenue	33.7%	33.96%	25.05%
Basic Earnings Per Share		$0.77	$0.54
Diluted Earnings Per Share	$0.75	$0.76	$0.53
COMMON SHARES
Basic Shares Outstanding	30.52M shares	30.51M shares	30.01M shares
Diluted Shares Outstanding		30.63M shares	30.29M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$276.5M	$259.0M	$226.5M
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	$87.09M	$87.42M	$89.29M
YoY Change	-2.53%	-2.09%	62.36%
Goodwill	$220.9M	$220.9M	$221.0M
YoY Change	-0.05%	-0.05%	243.6%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets			$32.00M
YoY Change			-3.32%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$6.471B	$6.385B	$6.319B
YoY Change	1.87%	1.04%	35.7%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$2.400M	$2.800M	$1.700M
YoY Change	20.0%	64.71%	88.89%
Accrued Expenses	$27.50M	$28.50M	$18.40M
YoY Change		54.89%	46.03%
Deferred Revenue
YoY Change
Short-Term Debt	$18.50M	$16.40M	$282.8M
YoY Change	17.09%	-94.2%	2075.38%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$29.90M	$31.30M	$20.10M
YoY Change	1395.0%	55.72%	48.89%
LONG-TERM LIABILITIES
Long-Term Debt	$57.20M	$57.20M	$57.00M
YoY Change	0.35%	0.35%	0.35%
Other Long-Term Liabilities	$92.00M	$87.90M	$8.345M
YoY Change	9.92%	953.33%	187.66%
Total Long-Term Liabilities	$149.2M	$145.1M	$8.345M
YoY Change	6.04%	1638.77%	187.66%
TOTAL LIABILITIES
Total Short-Term Liabilities	$29.90M	$31.30M	$20.10M
Total Long-Term Liabilities	$149.2M	$145.1M	$8.345M
Total Liabilities	$5.565B	$5.488B	$5.517B
YoY Change	0.72%	-0.52%	32.94%
SHAREHOLDERS EQUITY
Retained Earnings	$367.8M	$351.8M	$287.6M
YoY Change	21.19%	22.32%	12.28%
Common Stock	$544.0M	$543.4M	$541.5M
YoY Change	0.41%	0.35%	112.17%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$906.6M	$896.7M	$802.1M
YoY Change
Total Liabilities & Shareholders Equity	$6.471B	$6.385B	$6.319B
YoY Change	1.87%	1.04%	35.7%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2018 Q3
OPERATING ACTIVITIES
Net Income	$22.89M	$23.40M	$16.17M
YoY Change	-1.38%	44.68%	35.92%
Depreciation, Depletion And Amortization	$3.000M	$3.100M	$3.100M
YoY Change	-14.29%	0.0%	40.91%
Cash From Operating Activities	$26.50M	$42.40M	$27.00M
YoY Change	-15.06%	57.04%	48.35%
INVESTING ACTIVITIES
Capital Expenditures	-$1.200M	-$500.0K	-$1.600M
YoY Change	-29.41%	-68.75%	-68.0%
Acquisitions
YoY Change
Other Investing Activities	-$74.80M	$94.10M	$33.60M
YoY Change	172.0%	180.06%	-129.55%
Cash From Investing Activities	-$76.00M	$93.60M	$31.90M
YoY Change	161.17%	193.42%	-126.87%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	67.00M	-52.60M	-16.40M
YoY Change	-6190.91%	220.73%	-113.58%
NET CHANGE
Cash From Operating Activities	26.50M	42.40M	27.00M
Cash From Investing Activities	-76.00M	93.60M	31.90M
Cash From Financing Activities	67.00M	-52.60M	-16.40M
Net Change In Cash	17.50M	83.40M	42.50M
YoY Change	1650.0%	96.24%	109.36%
FREE CASH FLOW
Cash From Operating Activities	$26.50M	$42.40M	$27.00M
Capital Expenditures	-$1.200M	-$500.0K	-$1.600M
Free Cash Flow	$27.70M	$42.90M	$28.60M
YoY Change	-15.81%	50.0%	23.28%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	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	2019-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	000-10661
CY2019Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	30520725	shares
CY2019Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	118960000	USD
CY2018Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	119781000	USD
CY2019Q3	tcbk	Cash At Federal Reserve And Other Banks CashAtFederalReserveAndOtherBanks	140087000	USD
	dei	Entity Registrant Name EntityRegistrantName	TriCo Bancshares
	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
CY2018Q4	tcbk	Cash At Federal Reserve And Other Banks CashAtFederalReserveAndOtherBanks	107752000	USD
CY2018Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	1115036000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	259047000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	227533000	USD
CY2019Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	2974000	USD
CY2018Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	2874000	USD
CY2019Q3	us-gaap	Available For Sale Securities AvailableForSaleSecurities	984080000	USD
CY2019Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	393449000	USD
CY2018Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	444936000	USD
CY2019Q3	us-gaap	Restricted Investments RestrictedInvestments	17250000	USD
CY2018Q4	us-gaap	Restricted Investments RestrictedInvestments	17250000	USD
CY2019Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	7604000	USD
CY2018Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	3687000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4182348000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4022014000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	31537000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	32582000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	4150811000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	3989432000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	87424000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	89347000	USD
CY2019Q3	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	117088000	USD
CY2018Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	117318000	USD
CY2019Q3	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	18205000	USD
CY2018Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	19412000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	220872000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	220972000	USD
CY2019Q3	tcbk	Core Deposit Intangible CoreDepositIntangible	24988000	USD
CY2018Q4	tcbk	Core Deposit Intangible CoreDepositIntangible	29280000	USD
CY2019Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	28957000	USD
CY2019Q3	us-gaap	Other Assets OtherAssets	72134000	USD
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CY2019Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1777357000	USD
CY2018Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1760580000	USD
CY2019Q3	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	3518050000	USD
CY2018Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	3605886000	USD
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CY2018Q4	us-gaap	Deposits Deposits	5366466000	USD
CY2019Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	2847000	USD
CY2018Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	1997000	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	28494000	USD
CY2019Q3	us-gaap	Other Liabilities OtherLiabilities	87867000	USD
CY2018Q4	us-gaap	Other Liabilities OtherLiabilities	83724000	USD
CY2019Q3	us-gaap	Other Borrowings OtherBorrowings	16423000	USD
CY2018Q4	us-gaap	Other Borrowings OtherBorrowings	15839000	USD
CY2019Q3	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	57180000	USD
CY2018Q4	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	57042000	USD
CY2019Q3	us-gaap	Liabilities Liabilities	5488218000	USD
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Liabilities Liabilities	5525068000	USD
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2019Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000	shares
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CY2019Q3	us-gaap	Common Stock Value CommonStockValue	543415000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	541762000	USD
CY2019Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	351751000	USD
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CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1499000	USD
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	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	166888000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	130455000	USD
CY2019Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	9864000	USD
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	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	30876000	USD
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	us-gaap	Dividend Income Operating DividendIncomeOperating	973000	USD
	us-gaap	Dividend Income Operating DividendIncomeOperating	1093000	USD
CY2019Q3	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	757000	USD
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	us-gaap	Interest Income Federal Funds Sold And Securities Purchased Under Agreements To Resell InterestIncomeFederalFundsSoldAndSecuritiesPurchasedUnderAgreementsToResell	2694000	USD
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	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	204526000	USD
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	us-gaap	Interest Expense Deposits InterestExpenseDeposits	4402000	USD
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	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	384000	USD
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	2106000	USD
CY2019Q3	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	817000	USD
CY2018Q3	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	815000	USD
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	2501000	USD
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	2301000	USD
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	us-gaap	Interest Expense InterestExpense	11653000	USD
	us-gaap	Interest Expense InterestExpense	8809000	USD
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	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	192873000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	151344000	USD
CY2019Q3	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	-329000	USD
CY2018Q3	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	2651000	USD
	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	-1392000	USD
	tcbk	Provision For Benefit From Provisions For Loan Losses ProvisionForBenefitFromProvisionsForLoanLosses	1777000	USD
CY2019Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	65017000	USD
CY2018Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	57838000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	194265000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	149567000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	10590000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	9743000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	29788000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	28327000	USD
	us-gaap	Gain Loss On Sale Of Debt Investments GainLossOnSaleOfDebtInvestments	107000	USD
	us-gaap	Gain Loss On Sale Of Debt Investments GainLossOnSaleOfDebtInvestments	207000	USD
CY2019Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	721000	USD
CY2019Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1236000	USD
CY2018Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	539000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2223000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1831000	USD
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CY2018Q3	us-gaap	Gain Loss On Sale Of Debt Investments GainLossOnSaleOfDebtInvestments	207000	USD
CY2018Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	728000	USD
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	2102000	USD
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	2414000	USD
CY2019Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	773000	USD
CY2018Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	732000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2294000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1996000	USD
CY2019Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	681000	USD
CY2018Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	387000	USD
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	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	2820000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	78746000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	68928000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1691000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	14108000	USD
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	12336000	USD
	us-gaap	Noninterest Income NoninterestIncome	39334000	USD
	us-gaap	Noninterest Income NoninterestIncome	36466000	USD
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CY2019Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	19445000	USD
CY2018Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	21705000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	59747000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	54298000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	46344000	USD
CY2018Q3	us-gaap	Noninterest Expense NoninterestExpense	47528000	USD
	us-gaap	Noninterest Expense NoninterestExpense	138493000	USD
	us-gaap	Noninterest Expense NoninterestExpense	123226000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	32781000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	22646000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	95106000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	62807000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9386000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6476000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25924000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17698000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	23395000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	16170000	USD
	us-gaap	Net Income Loss NetIncomeLoss	69182000	USD
	us-gaap	Net Income Loss NetIncomeLoss	45109000	USD
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.77
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.78
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.54
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.27
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.76
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.53
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.25
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.76
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	23395000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	16170000	USD
	us-gaap	Net Income Loss NetIncomeLoss	69182000	USD
	us-gaap	Net Income Loss NetIncomeLoss	45109000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	3697000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-5917000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	19378000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-20941000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-81000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-241000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3697000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5836000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19378000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-20700000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	27092000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	10334000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	88560000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	24409000	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	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	0	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	tcbk	Restricted Stock Units Released Amount RestrictedStockUnitsReleasedAmount	0	USD
CY2019Q3	tcbk	Performance Share Units Released Value PerformanceShareUnitsReleasedValue	0	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
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	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	0	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
	tcbk	Restricted Stock Units Released Amount RestrictedStockUnitsReleasedAmount	0	USD
	tcbk	Performance Share Units Released Value PerformanceShareUnitsReleasedValue	0	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
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	512344000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	16170000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-5836000	USD
CY2018Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	284437000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	802115000	USD
CY2018Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	21000	USD
CY2018Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	252000	USD
CY2018Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	274000	USD
CY2018Q3	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	77000	USD
CY2018Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	453000	USD
CY2018Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	5171000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	505808000	USD
	us-gaap	Net Income Loss NetIncomeLoss	45109000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-20700000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Stock Options Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationStockOptionsRequisiteServicePeriodRecognition	75000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	475000	USD
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	1019000	USD
	tcbk	Performance Share Units Vesting PerformanceShareUnitsVesting	0	USD
CY2018Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	284437000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1124000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	12984000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	802115000	USD
	us-gaap	Profit Loss ProfitLoss	69182000	USD
	us-gaap	Profit Loss ProfitLoss	45109000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	5273000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	4914000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4293000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2068000	USD
	tcbk	Provision For Reversal Of Benefit From Loan Losses Expensed ProvisionForReversalOfBenefitFromLoanLossesExpensed	-1392000	USD
	tcbk	Provision For Reversal Of Benefit From Loan Losses Expensed ProvisionForReversalOfBenefitFromLoanLossesExpensed	1777000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2050000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1953000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	107000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	207000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	92002000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	63912000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	89506000	USD
	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	100000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	66138000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2223000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1831000	USD
	tcbk	Change In Market Value Of Mortgage Servicing Rights ChangeInMarketValueOfMortgageServicingRights	1652000	USD
	tcbk	Change In Market Value Of Mortgage Servicing Rights ChangeInMarketValueOfMortgageServicingRights	-38000	USD
	tcbk	Provision For Benefit From Losses On Foreclosed Assets ProvisionForBenefitFromLossesOnForeclosedAssets	56000	USD
	tcbk	Provision For Benefit From Losses On Foreclosed Assets ProvisionForBenefitFromLossesOnForeclosedAssets	89000	USD
	tcbk	Gain On Transfer Of Loans To Foreclosed Assets GainOnTransferOfLoansToForeclosedAssets	151000	USD
	tcbk	Gain On Transfer Of Loans To Foreclosed Assets GainOnTransferOfLoansToForeclosedAssets	0	USD
	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	246000	USD
	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	390000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-82000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-206000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2294000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1996000	USD
	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	831000	USD
	us-gaap	Insured Event Gain Loss InsuredEventGainLoss	0	USD
	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	-92000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	1213000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	1094000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-1207000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	5820000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	850000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	799000	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	711000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	9860000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	76266000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	59905000	USD
	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	USD
	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	30613000	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 Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	54510000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	50738000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	54203000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	125247000	USD
	tcbk	Net Redemption Of Restricted Equity Securities NetRedemptionOfRestrictedEquitySecurities	0	USD
	tcbk	Net Redemption Of Restricted Equity Securities NetRedemptionOfRestrictedEquitySecurities	-7429000	USD
	tcbk	Payment For Loan And Lease Originations And Principal Collections PaymentForLoanAndLeaseOriginationsAndPrincipalCollections	159991000	USD
	tcbk	Payment For Loan And Lease Originations And Principal Collections PaymentForLoanAndLeaseOriginationsAndPrincipalCollections	178596000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	293279000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	37253000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	370843000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	1255000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	2206000	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	62000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3070000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5736000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	46204000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-112873000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-71059000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	92051000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	584000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-4335000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2196000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	834000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	18285000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	12984000	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	185000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-90956000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	74083000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	31514000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	21115000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	227533000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	205428000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	259047000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	226543000	USD
	tcbk	Unrealized Gain Loss On Securities Available For Sale UnrealizedGainLossOnSecuritiesAvailableForSale	27511000	USD
	tcbk	Unrealized Gain Loss On Securities Available For Sale UnrealizedGainLossOnSecuritiesAvailableForSale	-29704000	USD
	tcbk	Loans Transferred To Foreclosed Assets LoansTransferredToForeclosedAssets	331000	USD
	tcbk	Loans Transferred To Foreclosed Assets LoansTransferredToForeclosedAssets	511000	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
	tcbk	Market Value Of Shares Tendered By Employees In Lieu Of Cash To Pay For Exercise Of Options And Or Related Taxes MarketValueOfSharesTenderedByEmployeesInLieuOfCashToPayForExerciseOfOptionsAndOrRelatedTaxes	1124000	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	156000	USD
	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
	us-gaap	Interest Paid Net InterestPaidNet	10803000	USD
	us-gaap	Interest Paid Net InterestPaidNet	8010000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	25950000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	11625000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Other Assets Acquired1 NoncashOrPartNoncashAcquisitionOtherAssetsAcquired1	1456505000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Other Liabilities Assumed1 NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1	1172068000	USD
	tcbk	Number Of Subsidiary Business Trust NumberOfSubsidiaryBusinessTrust	5	Trust
CY2019Q3	tcbk	Number Of Loan Production Offices NumberOfLoanProductionOffices	2	Office
CY2019Q3	us-gaap	Equity Method Investment Aggregate Cost EquityMethodInvestmentAggregateCost	1717000	USD
	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:12pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman';font-size:10pt;font-weight:700;line-height:120%;">Use of Estimates in the Preparation of Financial Statements</span></div><div style="margin-top:6pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman';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="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman';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, 2018 (the “2018 Annual Report”). The Company believes that the disclosures made are adequate to make the information not misleading.</span></div>
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-top:18pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman';font-size:10pt;font-weight:700;line-height:120%;">Segment and Significant Group Concentration of Credit Risk</span></div><div style="margin-top:6pt;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:'Times New Roman';font-size:10pt;font-weight:400;line-height:120%;">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.</span></div>
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	Segment
	tcbk	Nonaccrual Status Loans Contractual Past Due NonaccrualStatusLoansContractualPastDue	P90D
CY2019Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	977543000	USD
CY2019Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	11854000	USD
CY2019Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	5317000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	984080000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	393449000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	6732000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	482000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	399699000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1136010000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1235000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	22209000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1115036000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	444936000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	409000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	7975000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	437370000	USD
	tcbk	Available For Sale Securities Sold At Carrying Value AvailableForSaleSecuritiesSoldAtCarryingValue	125247000	USD
	tcbk	Available For Sale Securities Sold At Carrying Value AvailableForSaleSecuritiesSoldAtCarryingValue	293279000	USD
	tcbk	Realized Investment Gain RealizedInvestmentGain	335000	USD
	tcbk	Realized Investment Gain RealizedInvestmentGain	207000	USD
	tcbk	Realized Investment Loss RealizedInvestmentLoss	228000	USD
	tcbk	Realized Investment Loss RealizedInvestmentLoss	0	USD
CY2019Q3	tcbk	Securities Pledged As Collateral SecuritiesPledgedAsCollateral	504475000	USD
CY2018Q4	tcbk	Securities Pledged As Collateral SecuritiesPledgedAsCollateral	597591000	USD
CY2019Q3	us-gaap	Us Government Agencies Securities At Carrying Value USGovernmentAgenciesSecuritiesAtCarryingValue	867714000	USD
	tcbk	Life Of Mortgage Backed Securities LifeOfMortgageBackedSecurities	P4Y8M12D
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	2607000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	2613000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	1263000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	1274000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	14986000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	15401000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	0	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	0	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	46263000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	47273000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	20747000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	21035000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	913687000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	918793000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	371439000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	377390000	USD
CY2019Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	977543000	USD
CY2019Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	984080000	USD
CY2019Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	393449000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	399699000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	331795000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	4806000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	71152000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	511000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	402947000	USD
CY2019Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	5317000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	336433000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	6148000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	415349000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	16061000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	751782000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	22209000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	229596000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2733000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	162690000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	5242000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	392286000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	7975000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4182348000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Before Fees Gross LoansAndLeasesReceivableBeforeFeesGross	4227934000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	8509000	USD
CY2019Q3	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	-37077000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4182348000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	31537000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4022014000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Before Fees Gross LoansAndLeasesReceivableBeforeFeesGross	4075244000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	9868000	USD
CY2018Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	-43362000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4022014000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	32582000	USD
CY2019Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	5318000	USD
CY2018Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	5871000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	6059000	USD
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	6137000	USD
CY2019Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	292000	USD
CY2018Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	253000	USD
	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	702000	USD
	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	769000	USD
CY2019Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference	71000	USD
CY2018Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference	-47000	USD
	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference	-260000	USD
	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference	203000	USD
CY2019Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	5097000	USD
CY2018Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	5571000	USD
CY2019Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	5097000	USD
CY2018Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	5571000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	32868000	USD
CY2019Q3	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	1522000	USD
CY2019Q3	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	520000	USD
CY2019Q3	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	-329000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	31537000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	32582000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	2541000	USD
	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	2888000	USD
	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	-1392000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	31537000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	30007000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	1524000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	31537000	USD
CY2019Q3	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	4149558000	USD
CY2019Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	22485000	USD
CY2019Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4182348000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	30323000	USD
CY2018	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	2364000	USD
CY2018	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	2040000	USD
CY2018	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	2583000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	32582000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	30266000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	2194000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	1940000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	32582000	USD
CY2018Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	3979744000	USD
CY2018Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	28047000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4022014000	USD
CY2018Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	29524000	USD
CY2018Q3	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	1142000	USD
CY2018Q3	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	570000	USD
CY2018Q3	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	2651000	USD
CY2018Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	31603000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	30323000	USD
	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1443000	USD
	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	1777000	USD
CY2018Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	31603000	USD
CY2018Q3	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	28865000	USD
CY2018Q3	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	2628000	USD
CY2018Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	31603000	USD
CY2018Q3	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	3986144000	USD
CY2018Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	27494000	USD
CY2018Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4027436000	USD
CY2019Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	16287000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	22274000	USD
CY2019Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	4000	SecurityLoan
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
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	18	SecurityLoan
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	2851000	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	7000	USD
CY2018Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	7	SecurityLoan
	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	Branches
CY2018Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	2007000	USD
CY2018Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2005000	USD
CY2018Q3	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureAdditionalProvision	-308000	USD
CY2018Q3	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	1000
CY2018Q3	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	128000	USD
CY2018Q3	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	13	SecurityLoan
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	3094000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	3101000	USD
	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureAdditionalProvision	-265000	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	6
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	637000	USD
	tcbk	Financial Impact Increase Decrease Due To Troubled Debt Restructure Charge Offs Or Additional Provision FinancialImpactIncreaseDecreaseDueToTroubledDebtRestructureChargeOffsOrAdditionalProvision	-2000	USD
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1306000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	3924000	USD
CY2019Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	65000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	194000	USD
CY2019Q3	us-gaap	Variable Lease Cost VariableLeaseCost	-13000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	-33000	USD
CY2019Q3	us-gaap	Sublease Income SubleaseIncome	32000	USD
	us-gaap	Sublease Income SubleaseIncome	98000	USD
CY2019Q3	us-gaap	Lease Cost LeaseCost	1326000	USD
	us-gaap	Lease Cost LeaseCost	3987000	USD
CY2018Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	1161000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	2937000	USD
CY2018Q3	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	10000	USD
	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	31000	USD
CY2019Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	1236000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	3683000	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	32162000	USD
CY2019Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y4M24D
CY2019Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0319
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1180000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4389000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4235000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3896000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3216000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	16682000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	33598000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	5104000	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	28494000	USD
CY2019Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1777357000	USD
CY2018Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1760580000	USD
CY2019Q3	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	1222955000	USD
CY2018Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	1252366000	USD
CY2019Q3	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1843873000	USD
CY2018Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1921324000	USD
CY2019Q3	tcbk	Time Deposits250000 Or More TimeDeposits250000OrMore	148449000	USD
CY2018Q4	tcbk	Time Deposits250000 Or More TimeDeposits250000OrMore	132429000	USD
CY2019Q3	tcbk	Other Time Certificates Deposits OtherTimeCertificatesDeposits	302773000	USD
CY2018Q4	tcbk	Other Time Certificates Deposits OtherTimeCertificatesDeposits	299767000	USD
CY2019Q3	us-gaap	Deposits Deposits	5295407000	USD
CY2018Q4	us-gaap	Deposits Deposits	5366466000	USD
CY2019Q3	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	1431000	USD
CY2018Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	1469000	USD
CY2019Q3	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	7011000	USD
CY2018Q3	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	13507000	USD
	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	25361000	USD
	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	22649000	USD
CY2007Q3	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	500000	shares
	tcbk	Stock Repurchase Program Cumulative Number Of Shares Repurchased During The Period StockRepurchaseProgramCumulativeNumberOfSharesRepurchasedDuringThePeriod	0	shares
	tcbk	Stock Repurchase Program Cumulative Number Of Shares Repurchased During The Period StockRepurchaseProgramCumulativeNumberOfSharesRepurchasedDuringThePeriod	0	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	343000	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	16.67
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	166000	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	15.93
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	177000	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.52
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	177000	shares
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	17.52
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	3326000	USD
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y10M24D
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Remaining Contractual Terms ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms	P1Y2M12D
	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	76968	shares
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	10590000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	9743000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	29788000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	28327000	USD
CY2019Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	773000	USD
CY2018Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	732000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2294000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1996000	USD
CY2019Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	721000	USD
CY2018Q3	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	728000	USD
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	2102000	USD
	tcbk	Asset Management And Commission Income AssetManagementAndCommissionIncome	2414000	USD
CY2019Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1236000	USD
CY2018Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	539000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2223000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1831000	USD
CY2019Q3	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	172000	USD
CY2018Q3	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	186000	USD
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	631000	USD
	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	514000	USD
CY2019Q3	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	126000	USD
CY2018Q3	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	88000	USD
	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	401000	USD
	tcbk	Sale Of Customer Checks SaleOfCustomerChecks	327000	USD
CY2019Q3	us-gaap	Gain Loss On Sale Of Debt Investments GainLossOnSaleOfDebtInvestments	107000	USD
CY2018Q3	us-gaap	Gain Loss On Sale Of Debt Investments GainLossOnSaleOfDebtInvestments	207000	USD
	us-gaap	Gain Loss On Sale Of Debt Investments GainLossOnSaleOfDebtInvestments	107000	USD
	us-gaap	Gain Loss On Sale Of Debt Investments GainLossOnSaleOfDebtInvestments	207000	USD
CY2019Q3	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	22000	USD
CY2018Q3	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-22000	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	100000	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-92000	USD
CY2019Q3	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	361000	USD
CY2018Q3	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	135000	USD
	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	1688000	USD
	tcbk	Operating Interest Income Other OperatingInterestIncomeOther	942000	USD
CY2019Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	3518000	USD
CY2018Q3	us-gaap	Noninterest Income Other NoninterestIncomeOther	2593000	USD
	us-gaap	Noninterest Income Other NoninterestIncomeOther	9546000	USD
	us-gaap	Noninterest Income Other NoninterestIncomeOther	8139000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	14108000	USD
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	12336000	USD
	us-gaap	Noninterest Income NoninterestIncome	39334000	USD
	us-gaap	Noninterest Income NoninterestIncome	36466000	USD
CY2019Q3	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	17656000	USD
CY2018Q3	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	15685000	USD
	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	51624000	USD
	tcbk	Base Salaries Net Of Deferred Loan Origination Costs BaseSalariesNetOfDeferredLoanOriginationCosts	44076000	USD
CY2019Q3	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	3791000	USD
CY2018Q3	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	4515000	USD
	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	10064000	USD
	tcbk	Incentive Compensation Expense IncentiveCompensationExpense	9126000	USD
CY2019Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	5452000	USD
CY2018Q3	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	5623000	USD
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	17058000	USD
	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	15726000	USD
CY2019Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	26899000	USD
CY2018Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	25823000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	78746000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	68928000	USD
CY2019Q3	us-gaap	Occupancy Net OccupancyNet	3711000	USD
CY2018Q3	us-gaap	Occupancy Net OccupancyNet	3173000	USD
	us-gaap	Occupancy Net OccupancyNet	11223000	USD
	us-gaap	Occupancy Net OccupancyNet	8574000	USD
CY2019Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3411000	USD
CY2018Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	2786000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	10114000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	7979000	USD
CY2019Q3	us-gaap	Equipment Expense EquipmentExpense	1679000	USD
CY2018Q3	us-gaap	Equipment Expense EquipmentExpense	1750000	USD
	us-gaap	Equipment Expense EquipmentExpense	5298000	USD
	us-gaap	Equipment Expense EquipmentExpense	4938000	USD
CY2019Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1431000	USD
CY2018Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1390000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4293000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2068000	USD
CY2019Q3	us-gaap	Advertising Expense AdvertisingExpense	1358000	USD
CY2018Q3	us-gaap	Advertising Expense AdvertisingExpense	1341000	USD
	us-gaap	Advertising Expense AdvertisingExpense	4222000	USD
	us-gaap	Advertising Expense AdvertisingExpense	3214000	USD
CY2019Q3	tcbk	Network Charges NetworkCharges	1343000	USD
CY2018Q3	tcbk	Network Charges NetworkCharges	1197000	USD
	tcbk	Network Charges NetworkCharges	3936000	USD
	tcbk	Network Charges NetworkCharges	3860000	USD
CY2019Q3	us-gaap	Professional Fees ProfessionalFees	999000	USD
CY2018Q3	us-gaap	Professional Fees ProfessionalFees	1352000	USD
	us-gaap	Professional Fees ProfessionalFees	2895000	USD
	us-gaap	Professional Fees ProfessionalFees	2898000	USD
CY2019Q3	us-gaap	Communication Communication	867000	USD
CY2018Q3	us-gaap	Communication Communication	819000	USD
	us-gaap	Communication Communication	2437000	USD
	us-gaap	Communication Communication	2201000	USD
CY2019Q3	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	94000	USD
CY2018Q3	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	537000	USD
	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	1095000	USD
	tcbk	Regulatory Assessments And Insurance RegulatoryAssessmentsAndInsurance	1384000	USD
CY2019Q3	us-gaap	Noncash Merger Related Costs NoncashMergerRelatedCosts	0	USD
CY2018Q3	us-gaap	Noncash Merger Related Costs NoncashMergerRelatedCosts	4150000	USD
	us-gaap	Noncash Merger Related Costs NoncashMergerRelatedCosts	0	USD
	us-gaap	Noncash Merger Related Costs NoncashMergerRelatedCosts	5227000	USD
CY2019Q3	us-gaap	Postage Expense PostageExpense	438000	USD
CY2018Q3	us-gaap	Postage Expense PostageExpense	275000	USD
	us-gaap	Postage Expense PostageExpense	1063000	USD
	us-gaap	Postage Expense PostageExpense	934000	USD
CY2019Q3	tcbk	Operational Losses OperationalLosses	228000	USD
CY2018Q3	tcbk	Operational Losses OperationalLosses	217000	USD
	tcbk	Operational Losses OperationalLosses	679000	USD
	tcbk	Operational Losses OperationalLosses	763000	USD
CY2019Q3	tcbk	Courier Service CourierService	357000	USD
CY2018Q3	tcbk	Courier Service CourierService	278000	USD
	tcbk	Courier Service CourierService	1039000	USD
	tcbk	Courier Service CourierService	769000	USD
CY2019Q3	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	50000	USD
CY2018Q3	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	2000	USD
	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	246000	USD
	tcbk	Loss Gain On Sale Of Foreclosed Assets LossGainOnSaleOfForeclosedAssets	390000	USD
CY2019Q3	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-2000	USD
CY2018Q3	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-152000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-82000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-206000	USD
CY2019Q3	tcbk	Other Operating Expenses OtherOperatingExpenses	3577000	USD
CY2018Q3	tcbk	Other Operating Expenses OtherOperatingExpenses	2290000	USD
	tcbk	Other Operating Expenses OtherOperatingExpenses	11617000	USD
	tcbk	Other Operating Expenses OtherOperatingExpenses	9673000	USD
CY2019Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	19445000	USD
CY2018Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	21705000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	59747000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	54298000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	46344000	USD
CY2018Q3	us-gaap	Noninterest Expense NoninterestExpense	47528000	USD
	us-gaap	Noninterest Expense NoninterestExpense	138493000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	23395000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	16170000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	30629000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	30291000	shares
CY2019Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	42000	shares
	us-gaap	Noninterest Expense NoninterestExpense	123226000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	30509000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	30011000	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	120000	shares
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	280000	shares
CY2018Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	10000	shares
	us-gaap	Net Income Loss NetIncomeLoss	69182000	USD
	us-gaap	Net Income Loss NetIncomeLoss	45109000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	30464000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	25317000	shares
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-107000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-570000	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
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	179000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	300000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	30643000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25617000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	42000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	10000	shares
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	5355000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-8193000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	27618000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-29134000	USD
CY2019Q3	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-107000	USD
CY2018Q3	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-207000	USD
	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-107000	USD
	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-207000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-107000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-207000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-20941000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	5248000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-8400000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	27511000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-29704000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	1551000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-2483000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	8133000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-8763000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	3697000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-5917000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	19378000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	89000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	266000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-668000	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
CY2018Q3	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
CY2018Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-128000	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
	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
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 Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-20700000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5836000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19378000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-382000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	89000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	115000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	266000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	-326000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-115000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-342000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-34000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-101000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-81000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-241000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3697000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1499000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-17879000	USD
	tcbk	Number Of Investment Securities Classified As Level3 NumberOfInvestmentSecuritiesClassifiedAsLevel3	0	Investmentsecurities
CY2019Q3	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0	USD
	tcbk	Loan Charged Off Carrying Value LoanChargedOffCarryingValue	0	USD
CY2019Q3	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1000
CY2019Q3	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0800
CY2019Q3	tcbk	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0650
CY2019Q3	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.0500
CY2018Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1000
CY2018Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0800
CY2018Q4	tcbk	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0650
CY2018Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.0500

Files In Submission

Name	View Source	Status
0001628280-19-013846-index-headers.html	Edgar Link	pending
0001628280-19-013846-index.html	Edgar Link	pending
0001628280-19-013846.txt	Edgar Link	pending
0001628280-19-013846-xbrl.zip	Edgar Link	pending
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Financial_Report.xlsx	Edgar Link	pending
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R1.htm	Edgar Link	pending
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tcbk-20190930.htm	Edgar Link	pending
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tcbk-20190930_cal.xml	Edgar Link	unprocessable
tcbk-20190930_def.xml	Edgar Link	unprocessable
tcbk-20190930_htm.xml	Edgar Link	completed
tcbk-20190930_lab.xml	Edgar Link	unprocessable
tcbk-20190930_pre.xml	Edgar Link	unprocessable

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$TCBK
Trico Bancshares Stock $tcbk

2019 Q4 Form 10-Q Financial Statement

#000162828019013846 Filed on November 08, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBK Trico Bancshares Stock $tcbk

2019 Q4 Form 10-Q Financial Statement

#000162828019013846 Filed on November 08, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TCBK
Trico Bancshares Stock $tcbk