Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Net interest income	$ 132,830	$ 137,595
Provision for credit losses	7,516	1,002
Noninterest income	55,349	51,377
Noninterest expense	131,146	128,327
Income Before Income Taxes	49,517	59,643
Income taxes	7,982	9,343
Net Income	41,535	50,300
Selected Financial Information
Total assets	18,376,612	18,877,178	$ 18,722,189
Depreciation and amortization	8,563	7,666
General Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	131,517	136,159
Provision for credit losses	7,348	934
Noninterest income	30,398	28,359
Noninterest expense	111,708	109,590
Income Before Income Taxes	42,859	53,994
Income taxes	6,309	7,924
Net Income	36,550	46,070
Selected Financial Information
Total assets	18,093,454	18,578,910
Depreciation and amortization	8,367	7,443
Wealth Management [Member]
Segment Reporting Information [Line Items]
Net interest income	1,316	1,439
Provision for credit losses	168	68
Noninterest income	8,957	8,719
Noninterest expense	7,991	8,034
Income Before Income Taxes	2,114	2,056
Income taxes	523	513
Net Income	1,591	1,543
Selected Financial Information
Total assets	178,165	207,414
Depreciation and amortization	62	69
Insurance [Member]
Segment Reporting Information [Line Items]
Net interest income	(3)	(3)
Noninterest income	15,994	14,299
Noninterest expense	11,447	10,703
Income Before Income Taxes	4,544	3,593
Income taxes	1,150	906
Net Income	3,394	2,687
Selected Financial Information
Total assets	104,993	90,854
Depreciation and amortization	$ 134	$ 154