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Junior Subordinated Debt - Summary of Terms and Recorded Balance of Subordinated Debenture (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Subordinated Borrowing [Line Items] |  |
Recorded Book Value | $ 101,120 | $ 101,099
Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Face Value | 98,889 |
TriCo Cap Trust I |  |
Subordinated Borrowing [Line Items] |  |
Recorded Book Value | 20,619 | 20,619
TriCo Cap Trust I | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Face Value | $ 20,619 |
Current Coupon Rate | 8.63% |
TriCo Cap Trust II |  |
Subordinated Borrowing [Line Items] |  |
Recorded Book Value | $ 20,619 | 20,619
TriCo Cap Trust II | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Face Value | $ 20,619 |
Current Coupon Rate | 8.13% |
North Valley Trust II |  |
Subordinated Borrowing [Line Items] |  |
Recorded Book Value | $ 5,629 | 5,602
North Valley Trust II | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Face Value | $ 6,186 |
Current Coupon Rate | 8.82% |
North Valley Trust III |  |
Subordinated Borrowing [Line Items] |  |
Recorded Book Value | $ 4,495 | 4,472
North Valley Trust III | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Face Value | $ 5,155 |
Current Coupon Rate | 8.38% |
North Valley Trust IV |  |
Subordinated Borrowing [Line Items] |  |
Recorded Book Value | $ 7,673 | 7,615
North Valley Trust IV | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Face Value | $ 10,310 |
Current Coupon Rate | 6.92% |
VRB Subordinated |  |
Subordinated Borrowing [Line Items] |  |
Recorded Book Value | $ 16,953 | 17,000
VRB Subordinated | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Face Value | $ 16,000 |
Current Coupon Rate | 9.08% |
VRB Subordinated - 5% |  |
Subordinated Borrowing [Line Items] |  |
Recorded Book Value | $ 25,132 | $ 25,172
VRB Subordinated - 5% | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Interest rate | 5.00% |
Face Value | $ 20,000 |
Current Coupon Rate | 5.00% |
SOFR PLUS | TriCo Cap Trust I | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Coupon Rate (Variable) 3 mo. SOFR + | 3.05% |
SOFR PLUS | TriCo Cap Trust II | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Coupon Rate (Variable) 3 mo. SOFR + | 2.55% |
SOFR PLUS | North Valley Trust II | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Coupon Rate (Variable) 3 mo. SOFR + | 3.25% |
SOFR PLUS | North Valley Trust III | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Coupon Rate (Variable) 3 mo. SOFR + | 2.80% |
SOFR PLUS | North Valley Trust IV | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Coupon Rate (Variable) 3 mo. SOFR + | 1.33% |
SOFR PLUS | VRB Subordinated | Subordinated debt |  |
Subordinated Borrowing [Line Items] |  |
Coupon Rate (Variable) 3 mo. SOFR + | 3.52% |

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