Parent Company Only Condensed Financial Information - Schedule of Condensed Statements of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Condensed Financial Statements Captions [Line Items]
Interest expense	$ (89,985)	$ (57,238)	$ (15,951)
Income tax benefit	(4,891)	(7,649)	(7,608)
Net income	31,683	42,964	39,427
Comprehensive income (loss)	25,856	53,479	(27,438)
CBI[Member]
Condensed Financial Statements Captions [Line Items]
Dividends from bank subsidiaries	20,300	28,100	26,300
Dividends from non-bank subsidiaries	1,350	1,390	1,150
Interest expense	(4,931)	(4,849)	(3,781)
Pension benefit	407	150	340
Other expense, net	(2,223)	(1,518)	(2,384)
Income before equity in undistributed net earnings of subsidiaries	14,903	23,273	21,625
Income tax benefit	1,418	1,309	1,140
Equity in undistributed net earnings of subsidiaries	15,362	18,382	16,662
Net income	31,683	42,964	39,427
Comprehensive income (loss)	$ 25,856	$ 53,489	$ (27,438)