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Junior Subordinated Debt - Summary of Terms and Recorded Balance of Subordinated Debenture (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Subordinated Borrowing [Line Items] |  |
Recorded Book Value | $ 101,191 | $ 101,099
Senior Subordinated Notes |  |
Subordinated Borrowing [Line Items] |  |
Face Value | 98,889 |
Recorded Book Value | 101,191 | 101,099
TriCo Cap Trust I | Senior Subordinated Notes |  |
Subordinated Borrowing [Line Items] |  |
Face Value | $ 20,619 |
Coupon Rate (Variable) 3 mo. SOFR + | 3.05% |
Current Coupon Rate | 7.97% |
Recorded Book Value | $ 20,619 | 20,619
TriCo Cap Trust II | Senior Subordinated Notes |  |
Subordinated Borrowing [Line Items] |  |
Face Value | $ 20,619 |
Coupon Rate (Variable) 3 mo. SOFR + | 2.55% |
Current Coupon Rate | 7.44% |
Recorded Book Value | $ 20,619 | 20,619
North Valley Trust II | Senior Subordinated Notes |  |
Subordinated Borrowing [Line Items] |  |
Face Value | $ 6,186 |
Coupon Rate (Variable) 3 mo. SOFR + | 3.25% |
Current Coupon Rate | 8.08% |
Recorded Book Value | $ 5,713 | 5,602
North Valley Trust III | Senior Subordinated Notes |  |
Subordinated Borrowing [Line Items] |  |
Face Value | $ 5,155 |
Coupon Rate (Variable) 3 mo. SOFR + | 2.80% |
Current Coupon Rate | 7.69% |
Recorded Book Value | $ 4,571 | 4,472
North Valley Trust IV | Senior Subordinated Notes |  |
Subordinated Borrowing [Line Items] |  |
Face Value | $ 10,310 |
Coupon Rate (Variable) 3 mo. SOFR + | 1.33% |
Current Coupon Rate | 5.95% |
Recorded Book Value | $ 7,863 | 7,615
VRB Subordinated - 6% | Senior Subordinated Notes |  |
Subordinated Borrowing [Line Items] |  |
Interest rate | 6.00% |
Face Value | $ 16,000 |
Coupon Rate (Variable) 3 mo. SOFR + | 3.52% |
Current Coupon Rate | 9.11% |
Recorded Book Value | $ 16,799 | 17,000
VRB Subordinated - 5% | Senior Subordinated Notes |  |
Subordinated Borrowing [Line Items] |  |
Interest rate | 5.00% |
Face Value | $ 20,000 |
Current Coupon Rate | 5.00% |
Recorded Book Value | $ 25,007 | $ 25,172

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