Annual report pursuant to Section 13 and 15(d)

The Company and its Significant Accounting Policies - Additional Information (Details)

v3.20.4
The Company and its Significant Accounting Policies - Additional Information (Details)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 09, 2020
USD ($)
$ / shares
shares
Jun. 01, 2020
USD ($)
shares
Apr. 13, 2020
USD ($)
May 22, 2019
USD ($)
$ / shares
shares
May 14, 2019
$ / shares
shares
Jun. 30, 2020
USD ($)
shares
Sep. 30, 2019
Employee
Jun. 30, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
Segment
Employee
NumberOfContractor
shares
Dec. 31, 2019
USD ($)
Employee
NumberOfContractor
shares
Dec. 31, 2018
USD ($)
Company And Significant Accounting Policies [Line Items]                        
Entity incorporation date                   Aug. 05, 1999    
Cash and cash equivalents                 $ 11,298,000 $ 22,141,000 $ 11,298,000  
IPO closing date         May 14, 2019              
Proceeds from PPP Loan     $ 2,300,000             2,289,000    
Outstanding borrowings                   0    
Net cash used in operating activities                   10,560,000 33,523,000  
Allowance for credit losses                 52,000 65,000 52,000  
Bad debt expense recognized                   $ 302,000 45,000  
Number of reporting segment | Segment                   1    
Foreign cash and cash equivalents                 733,000 $ 822,000 733,000  
Advertising expenses                   17,000 35,000  
Trade-in guarantee liability                 0   0  
Revenue recognized, trade-in guarantee                     268,000  
Net foreign currency transactions losses                   $ 389,000 $ 543,000  
Number of employees | Employee             16     263 402  
Number of contractors | NumberOfContractor                   54 98  
Percentage of reduction in force                   10.00%    
Restructuring cost                   $ 1,546,000 $ 736,000  
Restructuring cost paid                   1,000,000    
Cost of revenue                   100,000    
Restructuring and related cost, incurred cost                   $ 700,000    
Severance costs               $ 500,000 200,000      
Unpaid issuance costs and charged to accounts payable or accrued expenses                 14,000   14,000  
India                        
Company And Significant Accounting Policies [Line Items]                        
Number of employees | Employee                   317    
Shenzhen                        
Company And Significant Accounting Policies [Line Items]                        
Number of employees | Employee                   317    
Non-Recurring Engineering Tooling and Purchased Software Licenses                        
Company And Significant Accounting Policies [Line Items]                        
Amortization costs                   $ 2,303,000 2,904,000  
Net book value                 630,000 90,000 630,000  
Deferred costs                 $ 4,524,000 2,889,000 $ 4,524,000  
Cares Act                        
Company And Significant Accounting Policies [Line Items]                        
Proceeds from PPP Loan     $ 2,300,000                  
Note Amendment and Debt Cancellation Agreement | B. Riley Principal Investments, LLC                        
Company And Significant Accounting Policies [Line Items]                        
Outstanding indebtedness   $ 4,000,000                    
Outstanding borrowings   $ 6,170,000       $ 6,200,000   $ 6,200,000   $ 0    
Conversion shares | shares   8,226,834       8,226,834            
2020 Offering                        
Company And Significant Accounting Policies [Line Items]                        
IPO closing date Jun. 09, 2020                      
Common Stock                        
Company And Significant Accounting Policies [Line Items]                        
Issuance of common stock, net of issuance costs, shares | shares                   36,800,000 227,628  
Common Stock | 2020 Offering                        
Company And Significant Accounting Policies [Line Items]                        
Proceeds from issuance of public offering $ 25,086,000                      
Issuance of common stock, net of issuance costs, shares | shares 36,800,000                      
Shares issued and sold, price per share | $ / shares $ 0.75                      
Underwriting discounts and commissions $ 1,656,000                      
Offering expenses paid $ 689,000                      
Common Stock | IPO                        
Company And Significant Accounting Policies [Line Items]                        
Proceeds from issuance of public offering       $ 36,850,000                
Issuance of common stock, net of issuance costs, shares | shares       505,714 3,571,429           4,297,901  
Shares issued and sold, price per share | $ / shares       $ 11.00 $ 11.00              
Underwriting discounts and commissions       $ 3,139,000                
Offering expenses paid       $ 4,861,000                
Deferred offering costs                       $ 4,861,000
Common Stock | Over-Allotment                        
Company And Significant Accounting Policies [Line Items]                        
Issuance of common stock, net of issuance costs, shares | shares       30,000                
Shares issued and sold, price per share | $ / shares       $ 11.00