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Loans and Allowance for Credit Losses Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Receivables [Abstract]        
ACL - loans $ 243,705 $ 249,001    
ACL - OBS credit exposure 13,933 14,533    
Total ACL $ 257,638 $ 263,534 $ 280,259 $ 291,940