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Discontinued Operations (Depreciation, Amortization, and Capital Expenditures of Discontinued Operations) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Capital expenditures   $ 15,229 $ 12,605
Wiring [Member]      
Depreciation and amortization $ 856   2,111
Capital expenditures $ 362   $ 841