Annual report pursuant to Section 13 and 15(d)

DEBT (Details)

v3.20.4
DEBT (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Interest expense $ 1,353,000 $ 335,000
Credit Agreement    
Debt Instrument [Line Items]    
Maximum borrowing capacity 60,000,000.0  
Remaining borrowing capacity 40,000,000.0  
Debt issuance costs being amortized ratably 236,000  
Unamortized issuance costs and debt discounts 185,000  
Interest expense 1,400,000 $ 237,000
Accrued interest 272,000  
Outstanding balance 19,800,000  
Covenant, cash $ 10,000,000.0  
Final payment fee, percentage of principal 2.50%  
Credit Agreement | LIBOR    
Debt Instrument [Line Items]    
Basis spread on variable rate 5.65%  
Floor rate 1.50%  
Credit Agreement | as of September 27, 2019    
Debt Instrument [Line Items]    
Maximum borrowing capacity $ 10,000,000.0  
Credit Agreement | until December 31, 2020    
Debt Instrument [Line Items]    
Maximum borrowing capacity 10,000,000.0  
Credit Agreement | until March 31, 2021    
Debt Instrument [Line Items]    
Maximum borrowing capacity 20,000,000.0  
Credit Agreement | until March 31, 2022    
Debt Instrument [Line Items]    
Maximum borrowing capacity $ 20,000,000.0  
Credit Agreement | Initial interest-only payment period    
Debt Instrument [Line Items]    
Interest-only payments period 24 months  
Credit Agreement | First conditional interest-only payment period    
Debt Instrument [Line Items]    
Interest-only payments period 36 months  
Credit Agreement | Second conditional interest-only payment period    
Debt Instrument [Line Items]    
Interest-only payments period 48 months