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Allowance for Credit Losses - Amortized Cost Basis of Loans Experiencing Financial Difficulty and Modified (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Principal Forgiveness | $ 0
Payment Delay/Term Extension | 152
Combination - Term Change / Available Credit Reduction | 60
Combination - Payment Delay/Term Reduction | $ 1,430
Total % of Loans Outstanding (Percentage) | 0.61%
Reduction of available credit | $ 11
Commercial real estate | Farmland |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Principal Forgiveness | 0
Payment Delay/Term Extension | 0
Combination - Term Change / Available Credit Reduction | 0
Combination - Payment Delay/Term Reduction | $ 1,430
Total % of Loans Outstanding (Percentage) | 0.53%
Commercial and industrial |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Principal Forgiveness | $ 0
Payment Delay/Term Extension | 152
Combination - Term Change / Available Credit Reduction | 60
Combination - Payment Delay/Term Reduction | $ 0
Total % of Loans Outstanding (Percentage) | 0.08%

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- Definition Allowance for Credit Loss, Term Change, Available Credit Reduction + References No definition available. + Details
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Namespace Prefix: | tcbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Combination Payment Delay Or Term Reduction + References No definition available. + Details
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Namespace Prefix: | tcbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Financing Receivable, Amortized Costs Basis, Percentage Outstanding + References No definition available. + Details
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Namespace Prefix: | tcbk_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Financing Receivable, Modification, Reduction Of Available Credit, Amount + References No definition available. + Details
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Namespace Prefix: | tcbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Payment Delay/Extension, Amount + References No definition available. + Details
Name: | tcbk_PaymentDelayExtensionAmount
Namespace Prefix: | tcbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Principal Forgiveness + References No definition available. + Details
Name: | tcbk_PrincipalForgiveness
Namespace Prefix: | tcbk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |