Goodwill and Other Intangible Assets - Schedule of Gross Carrying Amounts and Accumulated Amortization of Other Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 226,885	$ 226,885
Accumulated Amortization and Impairment	(106,666)	(100,480)
Net Carrying Amount	120,219	126,405
Core deposit
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	170,642	170,642
Accumulated Amortization and Impairment	(85,861)	(80,951)
Net Carrying Amount	84,781	89,691
Customer trust relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	56,243	56,243
Accumulated Amortization and Impairment	(20,805)	(19,529)
Net Carrying Amount	$ 35,438	$ 36,714