Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net interest income	$ 136,105			$ 98,266			$ 348,125	$ 320,025
Provision for credit losses	11,593			(3,541)			10,775	(22,872)
Noninterest income	52,606			54,149			159,974	171,143
Noninterest expense	126,698			129,600			371,984	369,827
Income before income taxes	50,420			26,356			125,340	144,213
Income taxes	7,965			5,156			19,390	23,070
Net Income	42,455	$ 34,284	$ 29,211	21,200	$ 47,981	$ 51,962	105,950	121,143
Selected Financial Information
Total assets	17,190,634			17,364,644			17,190,634	17,364,644	$ 17,595,636
Depreciation and amortization	9,669			11,909			30,354	34,337
General Banking [Member]
Segment Reporting Information [Line Items]
Net interest income	134,842			96,928			344,185	316,205
Provision for credit losses	11,595			(3,539)			10,785	(22,865)
Noninterest income	29,690			32,863			91,170	107,682
Noninterest expense	108,740			112,996			318,425	319,159
Income before income taxes	44,197			20,334			106,145	127,593
Income taxes	6,396			3,693			14,571	18,953
Net Income	37,801			16,641			91,574	108,640
Selected Financial Information
Total assets	16,897,083			17,015,176			16,897,083	17,015,176
Depreciation and amortization	9,439			11,653			29,610	33,563
Wealth Management [Member]
Segment Reporting Information [Line Items]
Net interest income	1,266			1,341			3,948	3,828
Provision for credit losses	(2)			(2)			(10)	(7)
Noninterest income	9,007			9,126			27,105	26,609
Noninterest expense	8,224			7,747			24,637	23,690
Income before income taxes	2,051			2,722			6,426	6,754
Income taxes	515			685			1,609	1,694
Net Income	1,536			2,037			4,817	5,060
Selected Financial Information
Total assets	205,873			265,672			205,873	265,672
Depreciation and amortization	71			65			217	199
Insurance [Member]
Segment Reporting Information [Line Items]
Net interest income	(3)			(3)			(8)	(8)
Noninterest income	13,909			12,160			41,699	36,852
Noninterest expense	9,734			8,857			28,922	26,978
Income before income taxes	4,172			3,300			12,769	9,866
Income taxes	1,054			778			3,210	2,423
Net Income	3,118			2,522			9,559	7,443
Selected Financial Information
Total assets	87,678			83,796			87,678	83,796
Depreciation and amortization	$ 159			$ 191			$ 527	$ 575