Operating Segments - Schedule of Company’s Reportable Operating Segment Results (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Net interest income	$ 163,422	$ 151,906
Net interest income	46,155	43,184
Noninterest income	209,577	195,090
Salaries and employee benefits	74,824	72,653
Occupancy expense, net	12,651	12,258
Furniture and equipment expense	5,465	5,141
Deposit insurance	5,391	7,135
Other operating expenses	46,249	42,692
TOTAL NONINTEREST EXPENSE	144,580	139,879
Total noninterest expense	64,997	55,211
Provision for credit loss expense	26,797	10,206
Provision for income taxes	5,812	6,134
NET INCOME	32,388	38,871
Assets	26,792,991	27,372,175	$ 26,876,049
Community and Commercial Banking
Segment Reporting Information [Line Items]
Net interest income	162,872	151,919
Net interest income	36,359	34,201
Noninterest income	199,231	186,120
Salaries and employee benefits	70,024	68,243
Occupancy expense, net	12,174	11,807
Furniture and equipment expense	5,465	5,140
Deposit insurance	5,391	7,135
Other operating expenses	44,919	41,025
TOTAL NONINTEREST EXPENSE	137,973	133,350
Total noninterest expense	61,258	52,770
Provision for credit loss expense	26,797	10,206
Provision for income taxes	5,802	6,105
NET INCOME	28,659	36,459
Assets	26,785,600	27,365,379
Other
Segment Reporting Information [Line Items]
Net interest income	550	(13)
Net interest income	9,796	8,983
Noninterest income	10,346	8,970
Salaries and employee benefits	4,800	4,410
Occupancy expense, net	477	451
Furniture and equipment expense	0	1
Deposit insurance	0	0
Other operating expenses	1,330	1,667
TOTAL NONINTEREST EXPENSE	6,607	6,529
Total noninterest expense	3,739	2,441
Provision for credit loss expense	0	0
Provision for income taxes	10	29
NET INCOME	3,729	2,412
Assets	$ 7,391	$ 6,796