Condensed Financial Information - Parent Company Only - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and due from banks	$ 320,655	$ 235,950
Other assets	152,566	167,425
Total Assets	11,138,567	10,783,840
Liabilities and Stockholders' Equity
Other liabilities	137,212	138,272
Subordinated debentures	194,705	194,264
Total stockholders’ equity	1,169,369	1,108,587	$ 827,014	$ 763,784
Total Liabilities and Stockholders’ Equity	11,138,567	10,783,840
Parent Company
Assets
Cash and due from banks	47,664	47,362
Investment in subsidiaries	1,303,062	1,244,037
Other assets	15,431	13,422
Total Assets	1,366,157	1,304,821
Liabilities and Stockholders' Equity
Other liabilities	2,083	1,970
Subordinated debentures	194,705	194,264
Total stockholders’ equity	1,169,369	1,108,587
Total Liabilities and Stockholders’ Equity	$ 1,366,157	$ 1,304,821