PARENT COMPANY FINANCIAL INFORMATION - Statements of Condition (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 192,232	$ 420,020
Goodwill	363,436	370,223	$ 370,223
Other assets	333,331	275,078
Total assets	13,833,119	12,590,726	12,798,429
Liabilities
Subordinated debt	370,205	172,712
Accrued expenses and other liabilities	153,758	132,518
Total liabilities	12,349,351	11,071,047
Stockholders’ Equity:
Common stock	44,657	45,119
Additional paid-in capital	734,273	751,072
Retained earnings	836,789	732,027
Accumulated other comprehensive loss	(131,951)	(8,539)
Total stockholders' equity	1,483,768	1,519,679	$ 1,469,955	$ 1,132,974
Total liabilities and stockholders' equity	13,833,119	12,590,726
Parent Company
Assets
Cash and cash equivalents	83,923	69,038
Other investments	568	568
Investment in subsidiary	1,767,933	1,620,432
Goodwill	1,292	1,292
Other assets	3,375	2,255
Total assets	1,857,091	1,693,585
Liabilities
Subordinated debt	370,205	172,712
Accrued expenses and other liabilities	3,118	1,194
Total liabilities	373,323	173,906
Stockholders’ Equity:
Common stock	44,657	45,119
Additional paid-in capital	734,273	751,072
Retained earnings	836,789	732,027
Accumulated other comprehensive loss	(131,951)	(8,539)
Total stockholders' equity	1,483,768	1,519,679
Total liabilities and stockholders' equity	$ 1,857,091	$ 1,693,585