Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details Narrative)

v3.20.1
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]                      
Dividend and interest income                 $ 4,525 $ 0  
Allowance for doubtful accounts, accounts receivable current $ 2,004       $ 67       $ 2,004 67  
Products warranty description                 The Company typically provides a 1 - 3 year warranty on its products.    
Research and development expenses 3,032 $ 1,824 $ 2,024 $ 1,660 1,882 $ 1,696 $ 1,542 $ 1,743 $ 8,540 6,863 $ 4,538
Stock-based compensation expense                 3,794 2,163 2,437
Income tax, penalties or Interest            
Advertising and marketing expense                 1,228 996 538
Foreign currency translation gain (losses)                 653 77 (373)
Selling, General and Administrative Expenses [Member]                      
Debt Securities, Available-for-sale [Line Items]                      
Foreign currency translation gain (losses)                 $ (467) $ (214) $ 456
Customer Concentration Risk [Member] | Revenue [Member]                      
Debt Securities, Available-for-sale [Line Items]                      
Concentration risk, percentage                 20.00%   16.00%
Customer Concentration Risk [Member] | Revenue [Member] | Customer One [Member]                      
Debt Securities, Available-for-sale [Line Items]                      
Concentration risk, percentage                   18.00%  
Customer Concentration Risk [Member] | Revenue [Member] | Customer Two [Member]                      
Debt Securities, Available-for-sale [Line Items]                      
Concentration risk, percentage                   10.00%  
Customer Concentration Risk [Member] | Accounts Receivable [Member]                      
Debt Securities, Available-for-sale [Line Items]                      
Concentration risk, percentage                   11.00%  
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member]                      
Debt Securities, Available-for-sale [Line Items]                      
Concentration risk, percentage                   19.00% 14.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member]                      
Debt Securities, Available-for-sale [Line Items]                      
Concentration risk, percentage                   13.00% 11.00%
Customer Concentration Risk [Member] | Finance Receivables [Member] | One Customer [Member]                      
Debt Securities, Available-for-sale [Line Items]                      
Concentration risk, percentage                     14.00%