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Loans and Leases and the Allowance for Credit Losses - Schedule of Activity in Allowance by Portfolio Segment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Allowance for Credit Losses:      
Balance at Beginning of Period $ 216,252 $ 110,027 $ 106,693
Loans and Leases Charged-Off (17,319) (21,038) (23,955)
Recoveries on Loans and Leases Previously Charged-Off 11,354 13,900 11,289
Net Loans and Leases Recovered (Charged-Off) (5,965) (7,138) (12,666)
Provision for Credit Losses (52,466) 115,100 16,000
Balance at End of Period 157,821 216,252 110,027
Accounting Standards Update 2016-13      
Allowance for Credit Losses:      
Balance at Beginning of Period   110,027  
Balance at End of Period     110,027
CECL Adoption Impact | Accounting Standards Update 2016-13      
Allowance for Credit Losses:      
Balance at Beginning of Period   (1,737)  
Balance at End of Period     (1,737)
January 1, 2020 | Accounting Standards Update 2016-13      
Allowance for Credit Losses:      
Balance at Beginning of Period   108,290  
Balance at End of Period     108,290
Commercial      
Allowance for Credit Losses:      
Balance at Beginning of Period 84,847 73,801 66,874
Loans and Leases Charged-Off (1,117) (1,697) (2,738)
Recoveries on Loans and Leases Previously Charged-Off 506 2,328 1,513
Net Loans and Leases Recovered (Charged-Off) (611) 631 (1,225)
Provision for Credit Losses (19,286) 29,204 8,152
Balance at End of Period 64,950 84,847 73,801
Commercial | Accounting Standards Update 2016-13      
Allowance for Credit Losses:      
Balance at Beginning of Period   73,801  
Balance at End of Period     73,801
Commercial | CECL Adoption Impact | Accounting Standards Update 2016-13      
Allowance for Credit Losses:      
Balance at Beginning of Period   (18,789)  
Balance at End of Period     (18,789)
Commercial | January 1, 2020 | Accounting Standards Update 2016-13      
Allowance for Credit Losses:      
Balance at Beginning of Period   55,012  
Balance at End of Period     55,012
Consumer      
Allowance for Credit Losses:      
Balance at Beginning of Period 131,405 36,226 39,819
Loans and Leases Charged-Off (16,202) (19,341) (21,217)
Recoveries on Loans and Leases Previously Charged-Off 10,848 11,572 9,776
Net Loans and Leases Recovered (Charged-Off) (5,354) (7,769) (11,441)
Provision for Credit Losses (33,180) 85,896 7,848
Balance at End of Period $ 92,871 131,405 36,226
Consumer | Accounting Standards Update 2016-13      
Allowance for Credit Losses:      
Balance at Beginning of Period   36,226  
Balance at End of Period     36,226
Consumer | CECL Adoption Impact | Accounting Standards Update 2016-13      
Allowance for Credit Losses:      
Balance at Beginning of Period   17,052  
Balance at End of Period     17,052
Consumer | January 1, 2020 | Accounting Standards Update 2016-13      
Allowance for Credit Losses:      
Balance at Beginning of Period   $ 53,278  
Balance at End of Period     $ 53,278