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Significant Accounting Policies - Additional Information (Details)
 12 Months Ended
Dec. 31, 2020
USD ($)
Day
shares
Dec. 31, 2019
USD ($)
shares
Significant Accounting Policies [Line Items]    
Number of operating segments 1  
Short-term Investments $ 0 $ 0
Provision for inventory 10,000,000 0
Restricted Cash 200,000  
Allowance for doubtful trade accounts receivable 0 0
Goodwill impairment 0  
Contract assets 0  
Contract with Customer, Liability 19,000 22,000
Shipping and other transportation costs 200,000 300,000
Advertising costs $ 100,000 $ 100,000
Diluted weighted average common shares outstanding | shares 9,714,000 10,097,000
Warrant    
Significant Accounting Policies [Line Items]    
Diluted weighted average common shares outstanding | shares   1,000
Options Outstanding    
Significant Accounting Policies [Line Items]    
Diluted weighted average common shares outstanding | shares   412,000
Minimum    
Significant Accounting Policies [Line Items]    
Revenue recognition, payment terms | Day 30  
Property and equipment, estimated useful life 3 years  
Maximum    
Significant Accounting Policies [Line Items]    
Revenue recognition, payment terms | Day 90  
Property and equipment, estimated useful life 15 years