Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)

v3.22.1
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Product Information [Line Items]        
Cumulative inventory write-downs   $ 3,400 $ 3,500  
Standard Product Warranty Accrual $ 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% 93.00%    
Largest Customer One [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]        
Product Information [Line Items]        
Concentration risk 93.00%   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 90.00% 59.00%    
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 12.00%   9.00%  
Largest Customer Two [Member] | Sales to Telecommunications Customers [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]        
Product Information [Line Items]        
Concentration risk   15.00%    
Largest Customer Three [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]        
Product Information [Line Items]        
Concentration risk 7.00%   9.00%  
Largest Customer Three [Member] | Sales to Telecommunications Customers [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]        
Product Information [Line Items]        
Concentration risk   11.00%    
Largest Vendors One [Member] | Accounts Payable [Member] | Supplier Concentration Risk [Member]        
Product Information [Line Items]        
Concentration risk 32.00%   16.00%  
AUSTRALIA        
Product Information [Line Items]        
Cash $ 11   $ 9  
RON [Member]        
Product Information [Line Items]        
Cash $ 24   $ 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 1.00% 26.00%