Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies (Details Narrative)

v3.20.2
Organization and Summary of Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
May 04, 2020
Dec. 31, 2018
Net sales 97.00%   98.00%   95.00%    
Cash on hand $ 727   $ 727   $ 2,840    
Proceeds from warrants     2,629        
Inventory reserves 600   600   600    
Warranty reserve $ 375   $ 375   $ 375   $ 175
Largest Vendor [Member] | Accounts Payable [Member]              
Concentration risk     40.00%        
Largest Vendors One [Member] | Accounts Payable [Member]              
Concentration risk     18.00%        
Largest Vendors Two [Member] | Accounts Payable [Member]              
Concentration risk     11.00%   10.00%    
Largest Vendors One [Member] | Accounts Payable [Member]              
Concentration risk         11.00%    
Revenue [Member] | Sales to Telecommunications Customers [Member]              
Concentration risk 97.00% 98.00% 96.00% 96.00%      
Revenue [Member] | Sales to Telecommunications Customers [Member] | Largest Customer One [Member]              
Concentration risk 60.00% 64.00% 67.00% 62.00%      
Revenue [Member] | Sales to Telecommunications Customers [Member] | Largest Customer Two [Member]              
Concentration risk 16.00% 21.00% 14.00% 24.00%      
Accounts Receivable [Member] | Largest Customer One [Member]              
Concentration risk     61.00%   70.00%    
Accounts Receivable [Member] | Largest Customer Two [Member]              
Concentration risk     23.00%   6.00%    
Australia [Member]              
Cash $ 14   $ 14   $ 18    
Romania, New Leu [Member]              
Cash $ 22   $ 22   $ 4    
Citibank, N.A [Member]              
Aggregate principal amount           $ 1,715