XML 39 R23.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Other Borrowings | 12 Months Ended
--- | ---
Dec. 31, 2024
Debt Disclosure [Abstract] |
Other Borrowings | Other Borrowings A summary of the balances of other borrowings follows:
| December 31,
(in thousands) | 2024 |  | 2023
Term borrowing at FHLB, fixed rate of 5.23%, payable on April 8, 2025 | 75,000 |  |  | — |
Term borrowing at FHLB, fixed rate of 4.75%, payable on April 8, 2024 | — |  |  | 200,000 |
Overnight borrowing at FHLB, fixed rate of 5.70%, payable on January 2, 2024 | — |  |  | 400,000 |
Other collateralized borrowings, fixed rate, as of December 31, 2024 and 2023 of 0.05%, payable on January 2, 2025 and January 2, 2024, respectively | 14,610 |  |  | 32,582 |
Total other borrowings | $ | 89,610 |  |  | $ | 632,582 |
Other collateralized borrowings are generally overnight maturity borrowings from non-financial institutions that are collateralized by securities owned by the Company. As of December 31, 2024, the Company has pledged as collateral and sold under agreements to repurchase investment securities with fair value of $14.6 million under these other collateralized borrowings. The Company maintains a collateralized line of credit with the FHLB. Based on the FHLB stock requirements at December 31, 2024, this line provided for maximum borrowings of $2.4 billion of which $75.0 million was outstanding. As of December 31, 2024, the Company had designated investment securities with a fair value of $58.1 million and loans with unpaid principal balances totaling $4.3 billion as potential collateral under this collateralized line of credit with the FHLB. The Company maintains a collateralized line of credit with the Federal Reserve Bank of San Francisco (“FRB”). As of December 31, 2024, this line provided for maximum borrowings of $362.3 million of which none was outstanding. As of December 31, 2024, the Company has loans with unpaid principal balances totaling $468.3 million as potential collateral under this collateralized line of credit with the FRB. The Company has available unused correspondent banking lines of credit from commercial banks totaling $85.0 million for federal funds transactions at December 31, 2024.

X
- Definition Other borrowings. + References No definition available. + Details
Name: | tcbk_OtherBorrowingsTextBlock
Namespace Prefix: | tcbk_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration