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DEBT - Junior Subordinated Notes and SBA 7(a) Loan-Backed Notes Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
May 30, 2018
Dec. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]      
Restricted cash   $ 11,340 $ 10,013
Junior subordinated notes | LIBOR      
Debt Instrument [Line Items]      
Interest rate margin   3.25%  
SBA 7(a) loan-backed notes      
Debt Instrument [Line Items]      
Proceeds from SBA 7(a) loan-backed notes $ 38,200    
Weighted average life of notes 2 years    
Effective interest rate   1.49% 1.55%
Restricted cash   $ 1,900 $ 1,200
SBA 7(a) loan-backed notes | LIBOR      
Debt Instrument [Line Items]      
Interest rate margin 1.40%    
SBA 7(a) loan-backed notes | Prime Rate      
Debt Instrument [Line Items]      
Interest rate margin (1.08%)