Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies (Details)

v3.20.2
Organization and Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Total net sales $ 2,860 $ 7,747
DC power systems [Member]    
Total net sales 2,713 7,605
Accessories [Member]    
Total net sales 147 142
Telecom [Member]    
Total net sales 2,717 7,313
Government/Military [Member]    
Total net sales 4 372
Marine [Member]    
Total net sales 1 62
Other (backup DC power to various industries) [Member]    
Total net sales $ 138