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Debt - Gerber Star and EBGL Loans (Details)
9 Months Ended
Jan. 31, 2020
USD ($)
installment
Sep. 30, 2020
USD ($)
Apr. 30, 2020
USD ($)
Mar. 05, 2020
USD ($)
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]          
Debt outstanding   $ 2,719,000      
Long-term debt, net of current portion   16,896,000     $ 17,038,000
Star Loan Agreement          
Debt Instrument [Line Items]          
Debt outstanding   $ 1,900,000      
Revolving Credit Facility | Star Loan Agreement          
Debt Instrument [Line Items]          
Maximum borrowing capacity $ 2,500,000        
Automatic extension period   1 year      
Revolving Credit Facility | Star Loan Agreement | Board of Directors Chairman          
Debt Instrument [Line Items]          
Contractual obligation 2,500,000     $ 500,000  
Revolving Credit Facility | Star Loan Agreement | Prime Rate          
Debt Instrument [Line Items]          
Basis spread   3.50%      
Revolving Credit Facility | Star Loan Agreement | KBS Builders          
Debt Instrument [Line Items]          
Maximum borrowing capacity $ 2,000,000.0        
Number of monthly installments | installment 60        
Revolving Credit Facility | Star Loan Agreement | Gerber EBGL          
Debt Instrument [Line Items]          
Maximum borrowing capacity $ 500,000   $ 300,000    
Line of credit facility increase 300,000        
Revolving Credit Facility | Star Loan Agreement | Gerber EBGL | Prime Rate          
Debt Instrument [Line Items]          
Basis spread   2.75%      
Revolving Credit Facility | EBGL Loan Agreement          
Debt Instrument [Line Items]          
Maximum borrowing capacity $ 3,000,000.0        
Revolving Credit Facility | EBGL Loan Agreement | Collateral Pledged | LSVI          
Debt Instrument [Line Items]          
Cash       $ 300,000  
Revolving Credit Facility | Gerber EBGL          
Debt Instrument [Line Items]          
Long-term debt, net of current portion   $ 1,257,000     $ 0