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Summary of Significant Accounting Policies (Statements of Operations for Discontinued Operations) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Income (loss) from discontinued operations $ (210)
Wiring [Member]  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Loss on disposal (241)
Income tax expense on gain (loss) on disposal 31
Loss on disposal, net of tax (210)
Income (loss) from discontinued operations $ (210)