Quarterly report pursuant to Section 13 or 15(d)

Debt - Short term loan and line of credit (Details)

v3.20.2
Debt - Short term loan and line of credit (Details) - USD ($)
 3 Months Ended 9 Months Ended
Jul. 16, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Jun. 24, 2020
Jun. 23, 2020
Dec. 31, 2019
Dec. 19, 2019
Debt Instruments [Abstract]                  
Loss on extinguishment of debt   $ 88,000 $ 0 $ 88,000 $ 0        
Warrants, exercise price (in dollars per share)           $ 4.25 $ 5.00    
Debt issuance costs incurred (less than)       85,000 $ 20,000        
Line of credit, net                  
Debt Instruments [Abstract]                  
Debt outstanding   $ 5,048,000   $ 5,048,000       $ 4,819,000  
Floor interest rate   3.25%   3.25%          
Shareholder Guaranties                  
Debt Instruments [Abstract]                  
Guaranty obligations   $ 20,000,000.0   $ 20,000,000.0          
Warrants per share (in dollars per share)   $ 0.325   $ 0.325          
Warrants, exercisable period (up to)       24 months          
Warrants, exercise price (in dollars per share)   $ 1.82   $ 1.82          
Warrants, fair value   $ 4,200,000   $ 4,200,000          
Facilities Agreement                  
Debt Instruments [Abstract]                  
Maximum borrowing capacity                 $ 7,500,000
Repayment of line of credit $ 5,100,000                
Facilities Agreement | Short term loan                  
Debt Instruments [Abstract]                  
Maximum borrowing capacity                 $ 20,500,000
Debt outstanding   19,400,000   19,400,000       16,100,000  
Debt issuance costs and discounts   1,100,000   1,100,000       4,400,000  
Facilities Agreement | Line of credit, net                  
Debt Instruments [Abstract]                  
Loss on extinguishment of debt 100,000                
Debt outstanding   5,000,000.0   5,000,000.0       4,800,000  
Debt issuance costs and discounts   $ 300,000   $ 300,000       $ 200,000  
ABL Facility | Line of credit, net                  
Debt Instruments [Abstract]                  
Maximum borrowing capacity 7,500,000                
Debt issuance costs incurred (less than) $ 100,000                
Floor interest rate   3.25%   3.25%          
LIBOR | Line of credit, net                  
Debt Instruments [Abstract]                  
Basis spread on variable interest rate       2.50%          
LIBOR | ABL Facility | Line of credit, net                  
Debt Instruments [Abstract]                  
Basis spread on variable interest rate       2.50%