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Cash Value of Life Insurance | 12 Months Ended
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Dec. 31, 2023
Cash Value of Life Insurance [Abstract] |
Cash Value of Life Insurance | Cash Value of Life Insurance A summary of the activity in the balance of cash value of life insurance follows:
| Year ended December 31,
(in thousands) | 2023 |  | 2022
Beginning balance | $ | 133,742 |  |  | $ | 117,857 |
Acquired policies from business combination | — |  |  | 13,609 |
Increase in cash value of life insurance | 3,150 |  |  | 2,858 |
Gain on death benefit | — |  |  | 309 |
Insurance proceeds receivable reclassified to other assets | — |  |  | (891) |
Ending balance | $ | 136,892 |  |  | $ | 133,742 |
End of period death benefit | $ | 224,021 |  |  | $ | 223,427 |
Number of policies owned | 216 |  |  | 216 |
Insurance companies used | 14 |  |  | 14 |
Current and former employees and directors covered | 79 |  |  | 79 |

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- Definition Cash Value of Life Insurance + References No definition available. + Details
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Namespace Prefix: | tcbk_
Data Type: | xbrli:stringItemType
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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://www.xbrl.org/2003/role/disclosureRef -Topic 325 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//325-30/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 325 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481463/325-30-50-1 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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