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Servicing Assets - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Servicing Assets At Amortized Value [Line Items]    
Valuation allowance for impairment $ 0 $ 0
Servicing assets $ 15,505,000 $ 9,106,000
Minimum    
Servicing Assets At Amortized Value [Line Items]    
Fair value of servicing assets, discount rates 3.75% 1.75%
Fair value of servicing assets, prepayment speed 14.60% 14.30%
Maximum    
Servicing Assets At Amortized Value [Line Items]    
Fair value of servicing assets, discount rates 10.00% 10.00%
Fair value of servicing assets, prepayment speed 15.00% 15.10%