Goodwill and Other Intangible Assets - Schedule of Gross Carrying Amounts and Accumulated Amortization of Other Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 226,885	$ 109,301
Accumulated Amortization and Impairment	(79,433)	(74,623)
Net Carrying Amount	147,452	34,678
Core deposit
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	170,642	92,754
Accumulated Amortization and Impairment	(64,042)	(60,036)
Net Carrying Amount	106,600	32,718
Customer trust relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	56,243	16,547
Accumulated Amortization and Impairment	(15,391)	(14,587)
Net Carrying Amount	$ 40,852	$ 1,960