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Goodwill and Other Intangible Assets - Schedule of Gross Carrying Amounts and Accumulated Amortization of Other Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 109,301 $ 129,270
Accumulated Amortization and Impairment (74,623) (83,256)
Net Carrying Amount 34,678 46,014
Core deposit    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 92,754 112,723
Accumulated Amortization and Impairment (60,036) (69,623)
Net Carrying Amount 32,718 43,100
Customer trust relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 16,547 16,547
Accumulated Amortization and Impairment (14,587) (13,633)
Net Carrying Amount $ 1,960 $ 2,914