Junior Subordinated Debt (Tables)

12 Months Ended

Dec. 31, 2020

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, 2020				December 31, 2019
Subordinated Debt Series	Maturity Date	Face Value				Current Coupon Rate		Recorded Book Value		Recorded Book Value
TriCo Cap Trust I	10/7/2033	$	20,619	3.05	%	3.29	%	$	20,619	$	20,619
TriCo Cap Trust II	7/23/2034	20,619		2.55	%	2.76	%	20,619		20,619
North Valley Trust II	4/24/2033	6,186		3.25	%	3.46	%	5,303		5,215
North Valley Trust III	7/23/2034	5,155		2.80	%	3.01	%	4,199		4,118
North Valley Trust IV	3/15/2036	10,310		1.33	%	1.55	%	6,894		6,661
		$	62,889					$	57,635	$	57,232