Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)

v3.22.2.2
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2020
Product Information [Line Items]                
Net loss $ 739 $ 866 $ 1,859 $ 2,769        
Net cash used in operating activities     2,311 6,131        
Cash and cash equivalents 2,656   2,656   $ 5,101      
Line of credit 2,806   2,806          
Stockholders equity 21,391 $ 21,895 21,391 $ 21,895 23,250 $ 22,130 $ 22,761 $ 11,491
Working capital 20,138   20,138          
Cumulative inventory write-downs     3,300   3,500      
Standard Product Warranty Accrual $ 600   $ 600   $ 600     $ 600
Sales to Telecommunications Customers [Member] | Revenue from Contract with Customer Benchmark [Member] | Revenue from Rights Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk 99.00% 92.00% 99.00% 92.00%        
Largest Customer One [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk     94.00%   74.00%      
Largest Customer One [Member] | Sales to Telecommunications Customers [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk 88.00% 77.00% 89.00% 70.00%        
Largest Customer Two [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk         15.00%      
Largest Customer Two [Member] | Accounts Payable [Member] | Customer Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk     8.00%   9.00%      
Largest Vendors One [Member] | Accounts Payable [Member] | Supplier Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk     16.00%   16.00%      
Largest Customer Three [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk     8.00%   9.00%      
AUSTRALIA                
Product Information [Line Items]                
Cash $ 13   $ 13   $ 9      
RON [Member]                
Product Information [Line Items]                
Cash $ 18   $ 18   $ 23      
Non-US [Member] | Sales to Telecommunications Customers [Member] | Revenue from Contract with Customer Benchmark [Member] | Revenue from Rights Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk 2.00% 2.00% 1.00% 12.00%