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Goodwill and Intagible Assets - Schedule of Changes in Carrying Amounts and Accumulated Amortization of Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Intangible assets, Beginning balance $ 1,211 $ 1,550
Amortization (123) $ (282)
Impairment (1,049)
Cumulative translation adjustment $ (39) $ (57)
Intangible assets, Ending balance 1,211
Energy & Security Sonar Solutions [Member] | Cost [Member]    
Intangible assets, Beginning balance $ 511 $ 572
Amortization
Impairment
Cumulative translation adjustment $ (61)
Intangible assets, Ending balance $ 511 511
Energy & Security Sonar Solutions [Member] | Accumulated Amortization [Member]    
Intangible assets, Beginning balance [1] $ (511) (482)
Amortization $ (82) [1]
Impairment [1]
Cumulative translation adjustment $ 53 [1]
Intangible assets, Ending balance [1] $ (511) (511)
Smart Grid Distribution Automation [Member] | Cost [Member]    
Intangible assets, Beginning balance $ 2,175 $ 2,271
Amortization
Impairment $ (1,049)
Cumulative translation adjustment (116) $ (96)
Intangible assets, Ending balance 1,010 2,175
Smart Grid Distribution Automation [Member] | Accumulated Amortization [Member]    
Intangible assets, Beginning balance [1] (964) (811)
Amortization [1] $ (123) $ (200)
Impairment [1]
Cumulative translation adjustment [1] $ 77 $ 47
Intangible assets, Ending balance [1] $ (1,010) $ (964)
[1] Accumulated amortization