Quarterly report pursuant to Section 13 or 15(d)

Discontinued Operations - Schedule of Disposal Groups, Including Discontinued Operation Balance Sheet (Details)

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Discontinued Operations - Schedule of Disposal Groups, Including Discontinued Operation Balance Sheet (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]    
Other assets $ 94 $ 89
Total current assets 94 89
Property, plant and equipment, net [1] 81 81
Other assets 176 195
Total long-term assets 257 276
Total assets 351 365
Accounts payable 11 8
Accrued expenses and other liabilities 262 265
Environmental liabilities 619 632
Total current liabilities 892 905
Closure liabilities 122 120
Environmental liabilities 229 239
Total long-term liabilities 351 359
Total liabilities $ 1,243 $ 1,264
[1] net of accumulated depreciation of $10,000 for each period presented.