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NOTES PAYABLE - 2020 and 2021 Credit Agreements (Details) - Line of Credit - USD ($)
$ in Millions
1 Months Ended
Apr. 30, 2021
Jan. 31, 2021
May 31, 2020
Sep. 30, 2021
Dec. 31, 2020
2020 Credit Agreement          
Debt Instrument [Line Items]          
Proceeds from credit agreement     $ 25.0    
Fixed interest rate, annual     12.00%    
Fixed interest rate, paid in cash     8.00%    
Fixed interest rate, added back to principal     4.00%    
Outstanding balance         $ 25.6
Prepayment penalties $ 1.4        
2021 Credit Agreement          
Debt Instrument [Line Items]          
Proceeds from credit agreement   $ 1.8      
Fixed interest rate, annual   5.45%      
Outstanding balance       $ 1.9 $ 0.0
Total capacity   $ 2.7