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Borrowings, Line of Credit and Subordinated Debt - Additional Information (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Borrowings $ 88,700 $ 81,200
Other borrowings 7,500 396
Securities sold under agreements to repurchase 6,248 5,803
Carrying value of securities pledged as collateral 5,600 $ 7,600
Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Line of credit facility, maximum borrowing capacity 25,000  
Outstanding borrowings 7,500  
Remaining borrowing capacity $ 17,500