XML 64 R52.htm IDEA: XBRL DOCUMENT
v3.25.1

Allowance for Credit Losses - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Allowance For Loan And Lease Losses [Abstract] |  |
Threshold for loan analysis | $ 1.0 |
Interest lost on nonaccrual loans | 1.5 | $ 0.8
Interest income on nonaccrual loans | $ 0.0 | $ 0.1

X
- Definition Allowance For Loan And Lease Losses [Abstract] + References No definition available. + Details
Name: | tcbk_AllowanceForLoanAndLeaseLossesAbstract
Namespace Prefix: | tcbk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Threshold For Loan Analysis + References No definition available. + Details
Name: | tcbk_FinancingReceivableThresholdForLoanAnalysis
Namespace Prefix: | tcbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Loans Receivable, Impaired, Interest Lost on Nonaccrual Loans + References No definition available. + Details
Name: | tcbk_LoansReceivableImpairedInterestLostOnNonaccrualLoans
Namespace Prefix: | tcbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of interest income on financing receivable on nonaccrual status. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 16 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-16 + Details
Name: | us-gaap_FinancingReceivableNonaccrualInterestIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration