Annual report pursuant to Section 13 and 15(d)

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

v3.20.1
The Company and its Significant Accounting Policies - Additional Information (Details)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
May 22, 2019
USD ($)
$ / shares
shares
May 14, 2019
$ / shares
shares
Jan. 01, 2019
USD ($)
Nov. 02, 2018
Sep. 30, 2019
USD ($)
Employee
Nov. 30, 2018
Jun. 30, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
Segment
shares
Dec. 31, 2018
USD ($)
Customer
shares
Company And Significant Accounting Policies [Line Items]                    
Cash and cash equivalents               $ 11,298,000 $ 11,298,000 $ 13,049,000
Net proceeds from issuance of IPO                 36,864,000  
Cash and investment for operating activities                 33,523,000 (3,861,000)
Reverse stock split ratio       0.0667   0.0667        
Allowance for credit losses               52,000 52,000 11,000
Bad debt expense recognized                 $ 45,000 5,000
Number of reporting segment | Segment                 1  
Foreign cash and cash equivalents               733,000 $ 733,000 $ 884,000
Number of customers | Customer                   2
Revenue                 116,251,000 $ 135,665,000
Revenue recognition upon achievement of milestones                   0
Advertising expenses                 35,000 27,000
Trade-in guarantee liability               0 0 268,000
Revenue recognized, trade-in guarantee                 268,000 537,000
Net foreign currency transactions losses                 543,000 549,000
Number of employees reduced related to restructuring activities | Employee         16          
Restructuring costs         $ 747,000       736,000  
Restructuring charges paid               209,000    
IPO closing date   May 14, 2019                
Unpaid issuance costs and charged to accounts payable or accrued expenses               14,000 14,000  
Deferred revenue as contract liabilities     $ 770,000         291,000 291,000 4,223,000
ASC 606                    
Company And Significant Accounting Policies [Line Items]                    
Cumulative effect adjustment net of associated tax effect to reduce accumulated deficit     3,115,000              
Cumulative effect adjustment associated tax effect to reduce accumulated deficit     215,000              
Deferred revenue as contract liabilities     $ 770,000              
Forecast                    
Company And Significant Accounting Policies [Line Items]                    
Restructuring costs             $ 527,000      
Customer A and B                    
Company And Significant Accounting Policies [Line Items]                    
Revenue                   4,168,000
Non-Recurring Engineering Tooling and Purchased Software Licenses                    
Company And Significant Accounting Policies [Line Items]                    
Amortization costs                 2,904,000 1,410,000
Net book value               630,000 630,000 $ 1,686,000
Deferred costs               4,524,000 $ 4,524,000  
Common Stock                    
Company And Significant Accounting Policies [Line Items]                    
Shares issued and sold | shares                 228,294 1,270,905
Offering expenses paid                 $ 30,000 $ 831,000
Common Stock | IPO                    
Company And Significant Accounting Policies [Line Items]                    
Net proceeds from issuance of IPO $ 36,850,000               $ 36,850,000  
Shares issued and sold | 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               $ 8,000,000  
Deferred offering costs               $ 63,000 $ 63,000 $ 4,861,000
Common Stock | Over-Allotment                    
Company And Significant Accounting Policies [Line Items]                    
Shares issued and sold | shares 30,000                  
Shares issued and sold, price per share | $ / shares $ 11.00