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Cash Value of Life Insurance | 12 Months Ended
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Dec. 31, 2022
Cash Value of Life Insurance [Abstract] |
Cash Value of Life Insurance | Cash Value of Life InsuranceA summary of the activity in the balance of cash value of life insurance follows:
| Year ended December 31,
(in thousands) | 2022 |  | 2021
Beginning balance | $ | 117,857 |  |  | $ | 118,870 |
Acquired policies from business combination | 13,609 |  |  | — |
Increase in cash value of life insurance | 2,858 |  |  | 2,775 |
Gain on death benefit | 309 |  |  | 702 |
Insurance proceeds receivable reclassified to other assets | (891) |  |  | (4,490) |
Ending balance | $ | 133,742 |  |  | $ | 117,857 |
End of period death benefit | $ | 223,427 |  |  | $ | 193,318 |
Number of policies owned | 216 |  |  | 176 |
Insurance companies used | 14 |  |  | 14 |
Current and former employees and directors covered | 79 |  |  | 59 |

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- Definition Cash Value of Life Insurance + References No definition available. + Details
Name: | tcbk_CashValueOfLifeInsuranceAbstract
Namespace Prefix: | tcbk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The entire disclosure for corporate (COLI) or bank (BOLI) owned life insurance including the amount of cash surrender value that could be received as of the date of the statement of financial position, any restrictions on the company's ability to obtain the value of the life insurance policy on surrender, or any other additional information desired to be disclosed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -URI https://asc.fasb.org/topic&trid=2197064 + Details
Name: | us-gaap_LifeInsuranceCorporateOrBankOwnedTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration