Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies - Schedule of Disaggregated Net Sales (Details)

v3.20.2
Organization and Summary of Significant Accounting Policies - Schedule of Disaggregated Net Sales (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Total net sales $ 2,501 $ 6,939 $ 6,488 $ 23,922
Telecom [Member]        
Total net sales 2,491 6,753 6,294 22,497
Government/Military [Member]        
Total net sales 2 40 9 588
Marine [Member]        
Total net sales 1 5 61
Other (backup DC power to various industries) [Member]        
Total net sales 7 146 180 776
DC Power Systems [Member]        
Total net sales 2,414 6,776 6,200 23,379
Accessories [Member]        
Total net sales $ 87 $ 163 $ 288 $ 543