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Junior Subordinated Debt (Tables)
 12 Months Ended
Dec. 31, 2022
Equity [Abstract]  
Summary of Terms and Recorded Balance of Subordinated Debenture The following table summarizes the terms and recorded balance of each subordinated debenture as of the date indicated (dollars in thousands):
   Coupon Rate
(Variable) 3 mo. LIBOR +		As of December 31, 2022December 31, 2021
Subordinated Debt SeriesMaturity
Date		Face
Value		Current
Coupon Rate		Recorded
Book Value		Recorded
Book Value
TriCo Cap Trust I10/7/2033$20,619 3.05 %7.13 %$20,619 $20,619 
TriCo Cap Trust II7/23/203420,619 2.55 %6.87 %20,619 20,619 
North Valley Trust II4/24/20336,186 3.25 %7.69 %5,503 5,403 
North Valley Trust III7/23/20345,155 2.80 %7.12 %4,383 4,291 
North Valley Trust IV3/15/203610,310 1.33 %6.10 %7,393 7,147 
VRB Subordinated - 6%
3/29/202916,000 Fixed6.00 %17,187 — 
VRB Subordinated - 5%
8/27/203520,000 Fixed5.00 %25,336 — 
$98,889 $101,040 $58,079