Parent Company Only Condensed Financial Information - Schedule of Condensed Statements of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Condensed Financial Statements Captions [Line Items]
Interest expense	$ (11,049)	$ (6,317)	$ (10,138)
Income tax benefit	(7,608)	(7,835)	(4,940)
Net income	39,427	40,546	32,192
Comprehensive income (loss)	(27,438)	34,747	39,937
CBI[Member]
Condensed Financial Statements Captions [Line Items]
Dividends from bank subsidiaries	26,300	19,900	15,300
Dividends from non-bank subsidiaries	1,150	1,000	440
Interest expense	(3,781)	(956)	(945)
Pension expense	340	(47)	(25)
Other expense, net	(2,384)	(1,004)	(1,241)
Income before equity in undistributed net earnings of subsidiaries	21,625	18,893	13,529
Income tax benefit	1,140	425	475
Equity in undistributed net earnings of subsidiaries	16,662	21,228	18,188
Net income	39,427	40,546	32,192
Comprehensive income (loss)	$ (27,438)	$ 34,747	$ 39,937