Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 230,018	$ 208,255
Accumulated Amortization	(159,632)	(136,941)
Valuation Allowance	0	(865)
Net Intangible Assets	70,386	70,449
Loan servicing rights
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	114,636	103,150
Accumulated Amortization	(90,951)	(80,340)
Valuation Allowance	0	(865)
Net Intangible Assets	23,685	21,945
Core deposits
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	109,290	101,160
Accumulated Amortization	(65,488)	(53,747)
Valuation Allowance	0	0
Net Intangible Assets	43,802	47,413
Other
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	6,092	3,945
Accumulated Amortization	(3,193)	(2,854)
Valuation Allowance	0	0
Net Intangible Assets	$ 2,899	$ 1,091