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Discontinued Operations, Assets Held for Sale - Carrying Amounts of Assets and LIabilities (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Total current liabilities of discontinued operations | $ 8,685 | $ 6,059
Commercial Business Segment |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Accounts receivable | 189 | 813
Total current assets of discontinued operations | 189 | 813
Accounts payable | 122 | 3,115
Accrued expenses and other current liabilities | 8,248 | 2,944
Total current liabilities of discontinued operations | $ 8,370 | $ 6,059

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