Quarterly report pursuant to Section 13 or 15(d)

Debt - Term loan and line of credit (Details)

v3.21.1
Debt - Term loan and line of credit (Details)
 3 Months Ended 12 Months Ended
Jan. 06, 2021
USD ($)
Oct. 29, 2020
USD ($)
Oct. 05, 2020
USD ($)
Jul. 16, 2020
USD ($)
Mar. 31, 2021
USD ($)
$ / shares
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
Dec. 19, 2019
USD ($)
Debt Instruments [Abstract]                
Loss on extinguishment of debt         $ 394,000 $ 0    
Debt issuance costs incurred         116,000 $ 0    
Long term debt         31,089,000   $ 32,611,000  
Short-term debt                
Debt Instruments [Abstract]                
Maximum borrowing capacity               $ 20,500,000
Repayments of debt   $ 1,000,000.0 $ 11,000,000.0          
Revolving Credit Agreement                
Debt Instruments [Abstract]                
Maximum borrowing capacity               $ 7,500,000
Line of credit, net                
Debt Instruments [Abstract]                
Loss on extinguishment of debt         (400,000)      
Line of credit, net | Old Plank Trail Community Bank, N.A.                
Debt Instruments [Abstract]                
Maximum borrowing capacity $ 6,000,000.0              
Debt issuance costs incurred         $ 100,000      
Floor interest rate         2.50%      
Fixed Charge Coverage Ratio 1.25              
Term Loan | Old Plank Trail Community Bank, N.A.                
Debt Instruments [Abstract]                
Maximum borrowing capacity $ 6,000,000.0              
Line of credit, net                
Debt Instruments [Abstract]                
Basis spread on variable interest rate         2.50%      
Floor interest rate         2.50%   3.25%  
Long term debt         $ 4,781,000   $ 5,023,000  
Shareholder Guaranties                
Debt Instruments [Abstract]                
Guaranty obligations         $ 20,000,000.0      
Warrants per share (in dollars per share) | $ / shares         $ 0.325      
Facilities Agreement                
Debt Instruments [Abstract]                
Repayment of line of credit       $ 5,100,000        
Facilities Agreement | Term loan, net                
Debt Instruments [Abstract]                
Long term debt         $ 5,800,000   7,800,000  
Debt issuance costs and discounts         100,000   200,000  
Facilities Agreement | Line of credit, net                
Debt Instruments [Abstract]                
Loss on extinguishment of debt       100,000        
Long term debt         $ 4,800,000   5,000,000.0  
Debt issuance costs and discounts             $ 200,000  
ABL Facility | Line of credit, net                
Debt Instruments [Abstract]                
Maximum borrowing capacity       7,500,000        
Debt issuance costs incurred       $ 100,000        
Floor interest rate         3.25%      
LIBOR | Line of credit, net | Old Plank Trail Community Bank, N.A.                
Debt Instruments [Abstract]                
Basis spread on variable interest rate         2.50%      
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%