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Discontinued Operations, Assets Held for Sale - Carrying Amounts of Assets and LIabilities (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Total current liabilities of discontinued operations $ 3,727   $ 3,727   $ 5,925
Commercial Business Segment [Member]          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Accounts receivable, net 83   83   392
Impairment charge from classification as assets held for sale 0 $ 0 0 $ 0  
Total current assets of discontinued operations, net 83   83   392
Accounts payable 1,299   1,299   1,491
Accrued expenses and other current liabilities 2,428   2,428   4,434
Total current liabilities of discontinued operations $ 3,727   $ 3,727   $ 5,925