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ASSETS HELD FOR SALE - Significant Assets Included in Assets Held for Sale (Details) - Held for sale $ in Thousands | Dec. 31, 2017 USD ($)
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Less: accumulated depreciation | $ (96,765)
Total assets held for sale | 104,576
South Yard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Less: accumulated depreciation | (40,838)
Total assets held for sale | 46,779
North Yard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Less: accumulated depreciation | (55,629)
Total assets held for sale | 55,894
Prospect Shipyard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Less: accumulated depreciation | (298)
Total assets held for sale | 1,903
Land |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | 5,492
Land | South Yard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | 3,335
Land | North Yard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | 2,157
Land | Prospect Shipyard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | 0
Buildings and improvements |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | 123,830
Buildings and improvements | South Yard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | 84,282
Buildings and improvements | North Yard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | 39,548
Buildings and improvements | Prospect Shipyard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | 0
Machinery and equipment |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | 72,019
Machinery and equipment | South Yard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | 0
Machinery and equipment | North Yard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | 69,818
Machinery and equipment | Prospect Shipyard |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Property, plant and equipment | $ 2,201

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