Parent Company Only Condensed Financial Information - Schedule of Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Equity securities	$ 2,169	$ 2,190
Other assets	26,266	22,756
Total assets	3,861,418	3,639,445
LIABILITIES
Subordinated debentures	103,943	103,799
Total liabilities	3,489,416	3,304,610
SHAREHOLDERS’ EQUITY
Common stock	311,166	310,182
Accumulated earnings	183,788	156,492
Treasury stock	(75,422)	(73,794)
Accumulated other comprehensive loss	(47,530)	(58,045)
Total shareholders’ equity	372,002	334,835	$ 355,212	$ 350,108
Total liabilities and shareholders’ equity	3,861,418	3,639,445
CBI[Member]
ASSETS
Cash	8,331	21,812	$ 45,800	$ 19,446
Equity securities	2,169	2,190
Investment in bank subsidiary	450,791	414,263
Investment in nonbank subsidiaries	3,917	3,236
Other assets	12,354	3,332
Total assets	477,562	444,833
LIABILITIES
Deferred income taxes and other liabilities	1,618	6,199
Subordinated debentures	103,943	103,799
Total liabilities	105,561	109,998
SHAREHOLDERS’ EQUITY
Common stock	311,166	310,182
Accumulated earnings	183,787	156,492
Treasury stock	(75,422)	(73,794)
Accumulated other comprehensive loss	(47,530)	(58,045)
Total shareholders’ equity	372,001	334,835
Total liabilities and shareholders’ equity	$ 477,562	$ 444,833