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Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value $ 279,199 $ 253,941
Accumulated Amortization 131,042 112,957
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 225,900 202,342
Accumulated Amortization 97,054 85,152
Trade Name [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 30,359 28,659
Accumulated Amortization 17,694 15,660
Non-Compete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 9,240 9,240
Accumulated Amortization 5,684 4,229
Core Deposits [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 8,615 8,615
Accumulated Amortization 6,277 4,809
Investment Banking Backlog [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 4,245 4,245
Accumulated Amortization 3,680 2,734
Acquired Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Value 840 840
Accumulated Amortization $ 653 $ 373