XML 44 R64.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Note 11 - Business Segment Information - Revenue by Business Segment Sector (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Revenue [1] $ 106,795 $ 87,190
Revenue, percentage [1]
Commercial [Member]    
Revenue $ 59,682 $ 41,044
Revenue, percentage 56.00% 47.00%
Government & Defense [Member]    
Revenue $ 47,113 $ 46,146
Revenue, percentage 44.00% 53.00%
Battery & Energy Products Segment [Member]    
Revenue [1] $ 83,996 $ 70,497
Battery & Energy Products Segment [Member] | Commercial [Member]    
Revenue 59,682 41,044
Battery & Energy Products Segment [Member] | Government & Defense [Member]    
Revenue 24,314 29,453
Communications Systems Segment [Member]    
Revenue [1] 22,799 16,693
Communications Systems Segment [Member] | Commercial [Member]    
Revenue
Communications Systems Segment [Member] | Government & Defense [Member]    
Revenue $ 22,799 $ 16,693
[1] Sales classified to U.S. include shipments to U.S.-based prime contractors which in some cases may serve non-U.S. projects