Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Net interest income	$ 138,637			$ 136,105			$ 416,136	$ 348,125
Provision for credit losses	8,426			11,593			17,884	10,775
Noninterest income	52,224			52,606			157,154	159,974
Noninterest expense	140,945			126,698			401,490	371,984
Income before income taxes	41,490			50,420			153,916	125,340
Income taxes	7,461			7,965			24,550	19,390
Net Income	34,029	$ 45,037	$ 50,300	42,455	$ 34,284	$ 29,211	129,366	105,950
Selected Financial Information
Total assets	18,390,839			17,190,634			18,390,839	17,190,634	$ 18,015,478
Depreciation and amortization	9,681			9,669			26,129	30,354
General Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	137,145			134,842			411,682	344,185
Provision for credit losses	10,646			11,595			20,015	10,785
Noninterest income	28,181			29,690			85,535	91,170
Noninterest expense	122,045			108,740			345,329	318,425
Income before income taxes	32,635			44,197			131,873	106,145
Income taxes	5,245			6,396			19,024	14,571
Net Income	27,390			37,801			112,849	91,574
Selected Financial Information
Total assets	18,099,301			16,897,083			18,099,301	16,897,083
Depreciation and amortization	9,483			9,439			25,496	29,610
Wealth Management [Member]
Segment Reporting Information [Line Items]
Net interest income	1,494			1,266			4,462	3,948
Provision for credit losses	(2,220)			(2)			(2,131)	(10)
Noninterest income	8,740			9,007			26,293	27,105
Noninterest expense	8,281			8,224			24,276	24,637
Income before income taxes	4,173			2,051			8,610	6,426
Income taxes	1,043			515			2,153	1,609
Net Income	3,130			1,536			6,457	4,817
Selected Financial Information
Total assets	194,837			205,873			194,837	205,873
Depreciation and amortization	63			71			199	217
Insurance [Member]
Segment Reporting Information [Line Items]
Net interest income	(2)			(3)			(8)	(8)
Noninterest income	15,303			13,909			45,326	41,699
Noninterest expense	10,619			9,734			31,885	28,922
Income before income taxes	4,682			4,172			13,433	12,769
Income taxes	1,173			1,054			3,373	3,210
Net Income	3,509			3,118			10,060	9,559
Selected Financial Information
Total assets	96,701			87,678			96,701	87,678
Depreciation and amortization	$ 135			$ 159			$ 434	$ 527