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Loans and Allowance for Credit Losses on Loans - Troubled Debt Restructuring Narrative (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
USD ($)
borrowingRelationship
loan
Mar. 31, 2021
loan
Dec. 31, 2021
USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Number of loans removed from TDR designation 0 0  
Financing receivable, loan modifications under CARES Act, payment relief, number of borrowing relationships | borrowingRelationship 2    
Financing receivable, loan modifications under CARES Act, payment relief 3    
Financing receivable, modified under CARES Act, payment relief | $ $ 23,600    
Financing receivable, weighted average loan-to-value ratio, modified under CARES Act, remaining payment relief 44.00%    
Unfunded commitments for TDR loans | $ $ 241   $ 441
Number of modified TDR loans that defaulted 0 0