XML 39 R20.htm IDEA: XBRL DOCUMENT
v3.22.4

Mortgage Servicing Rights | 12 Months Ended
--- | ---
Dec. 31, 2022
Mortgage Servicing Right [Abstract] |
Mortgage Servicing Rights | Mortgage Servicing Rights The following tables summarize the activity in, and the main assumptions used to determine the fair value of mortgage servicing rights for the periods indicated (dollars in thousands):
(in thousands) | Year ended December 31,
2022 |  | 2021 |  | 2020
Balance at beginning of period | $ | 5,874 |  |  | $ | 5,092 |  |  | $ | 6,200 |
Additions | 537 |  |  | 1,654 |  |  | 1,526 |
Change in fair value | 301 |  |  | (872) |  |  | (2,634) |
Balance at end of period | $ | 6,712 |  |  | $ | 5,874 |  |  | $ | 5,092 |
Contractually specified servicing fees, late fees and ancillary fees earned | $ | 1,887 |  |  | $ | 1,881 |  |  | $ | 1,855 |
Balance of loans serviced at: |  |  |  |  |
Beginning of period | $ | 770,299 |  |  | $ | 779,530 |  |  | $ | 767,662 |
End of period | $ | 739,919 |  |  | $ | 770,299 |  |  | $ | 779,530 |
Period end: |  |  |  |  |
Weighted-average prepayment speed (CPR) | 127.0 | % |  | 208.0 | % |  | 294.0 | %
Weighted-average expected life (years) | 7.6 |  | 5.7 |  | 4.5
Weighted-average discount rate | 12.0 | % |  | 12.0 | % |  | 12.0 | %
The changes in fair value of MSRs during 2022 were primarily due to changes in mortgage prepayment speeds and expected life estimates of the MSRs. The changes in fair value of MSRs during 2021 were primarily due to changes in principal balance and mortgage prepayment speeds of the MSRs. The changes in fair value of MSRs during 2020 were primarily due to changes in investor require rate of return, or discount rate, of the MSRs.

X
- Definition Mortgage service rights + References No definition available. + Details
Name: | tcbk_MortgageServiceRightsTextBlock
Namespace Prefix: | tcbk_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Mortgage Servicing Right + References No definition available. + Details
Name: | tcbk_MortgageServicingRightAbstract
Namespace Prefix: | tcbk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration