Condensed Financial Information - Parent Company Only - Schedule of Condensed Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets:
Cash and due from banks	$ 72,815	$ 84,176
Interest-earning deposits with other banks	176,984	68,623
Cash and cash equivalents	249,799	152,799	$ 890,150	$ 219,858
Investments in subsidiaries, at equity in net assets:
Other assets	7,633	6,068
Total assets	7,780,628	7,222,016	7,122,421
Liabilities:
Subordinated notes	148,761	148,260
Other liabilities	65,721	58,436
Total liabilities	6,941,420	6,445,516
Shareholders' equity:	839,208	776,500	773,794	692,472
Total liabilities and shareholders' equity	7,780,628	7,222,016
Parent Company [Member]
Assets:
Cash and due from banks	117,345	129,923
Interest-earning deposits with other banks	321	283
Cash and cash equivalents	117,666	130,206	$ 99,854	$ 154,633
Investments in securities	763	781
Investments in subsidiaries, at equity in net assets:
Bank	856,289	786,560
Non-banks	0	0
Other assets	17,139	13,258
Total assets	991,857	930,805
Liabilities:
Subordinated notes	148,761	148,260
Other liabilities	3,888	6,045
Total liabilities	152,649	154,305
Shareholders' equity:	839,208	776,500
Total liabilities and shareholders' equity	$ 991,857	$ 930,805