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Discontinued Operations (Statements of Operations) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Gain (Loss) on disposal, net of tax   $ (113)
Income (loss) from discontinued operations $ 55 (113)
Gain (loss) on disposal from working capital and other adjustments (118) 14
Transaction costs related to Wiring sale 51 98
Wiring [Member]    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Gain (Loss) on disposal [1] 67 (112)
Income tax expense on loss on disposal (12) (1)
Gain (Loss) on disposal, net of tax 55 (113)
Income (loss) from discontinued operations $ 55 $ (113)
[1] The gain (loss) on disposal for the three and six months ended June 30, 2015 included transaction costs of $51 and $98, respectively. The gain (loss) on disposal also included a working capital and other adjustments of $(118) and $14 for the three and six months ended June 30, 2015, respectively.