Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net interest income	$ 112,676		$ 119,423		$ 212,020	$ 221,759
Provision for credit losses	1,148				(818)
Noninterest income	53,253		56,411		107,368	116,994
Noninterest expense	123,767		118,679		245,286	240,227
Income before income taxes	41,014		56,618		74,920	117,857
Income taxes	6,730		8,637		11,425	17,914
Net Income	34,284	$ 29,211	47,981	$ 51,962	63,495	99,943
Selected Financial Information
Total assets	16,951,510		17,098,132		16,951,510	17,098,132	$ 17,595,636
Depreciation and amortization	10,244			11,302	20,685	22,428
General Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	111,352		118,169	219,277	209,343
Provision for credit losses	1,149		540		(810)	19,326
Noninterest income	30,545		35,167		61,480	74,819
Noninterest expense	106,352		102,199		209,685	206,163
Income before income taxes	34,396		50,597		61,948	107,259
Income taxes	5,074		7,137		8,175	15,260
Net Income	29,322		43,460		53,773	91,999
Selected Financial Information
Total assets	16,661,715		16,716,574		16,661,715	16,716,574
Depreciation and amortization	9,995		11,046	$ 21,910	20,171
Wealth Management [Member]
Segment Reporting Information [Line Items]
Net interest income	1,326		1,256		2,682	2,487
Provision for credit losses	(1)		(3)		(8)	(5)
Noninterest income	8,999		9,020		18,098	17,483
Noninterest expense	8,131		7,749		16,413	15,943
Income before income taxes	2,195		2,530		4,375	4,032
Income taxes	548		1,094		633	1,009
Net Income	1,647		1,897		3,281	3,023
Selected Financial Information
Total assets	199,752		299,275		199,752	299,275
Depreciation and amortization	73		66		146	134
Insurance [Member]
Segment Reporting Information [Line Items]
Net interest income	(2)		(2)		(5)	(5)
Noninterest income	13,709		12,224		27,790	24,692
Noninterest expense	9,284		8,731		19,188	18,121
Income before income taxes	4,423		3,491		8,597	6,566
Income taxes	1,108		867		2,156	1,645
Net Income	3,315		2,624		6,441	4,921
Selected Financial Information
Total assets	90,043		82,283		90,043	82,283
Depreciation and amortization	$ 176		$ 190		$ 368	$ 384