Parent Company Only Condensed Financial Information - Schedule of Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Equity securities	$ 2,190	$ 1,072
Other assets	25,196	22,814
Total assets	3,537,830	3,012,905
LIABILITIES
Subordinated debentures	103,799	103,735
Total liabilities	3,202,995	2,657,693
SHAREHOLDERS’ EQUITY
Common stock	310,182	277,741
Accumulated earnings	156,492	125,558
Treasury stock	(73,794)	(56,907)
Accumulated other comprehensive income (loss)	(58,045)	8,820
Total shareholders’ equity	334,835	355,212	$ 350,108	$ 330,126
Total liabilities and shareholders’ equity	3,537,830	3,012,905
CBI[Member]
ASSETS
Cash	21,812	45,800	$ 19,446	$ 24,089
Equity securities	2,190	1,072
Investment in bank subsidiary	414,263	408,255
Investment in nonbank subsidiaries	3,236	4,396
Other assets	3,332	2,016
Total assets	444,833	461,539
LIABILITIES
Deferred income taxes and other liabilities	6,199	2,592
Subordinated debentures	103,799	103,735
Total liabilities	109,998	106,327
SHAREHOLDERS’ EQUITY
Common stock	310,182	277,741
Accumulated earnings	156,492	125,558
Treasury stock	(73,794)	(56,907)
Accumulated other comprehensive income (loss)	(58,045)	8,820
Total shareholders’ equity	334,835	355,212
Total liabilities and shareholders’ equity	$ 444,833	$ 461,539