Permit and Other Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Goodwill and Intangible Assets Disclosure [Abstract] | |||||
| Balance | $ 8,474 | $ 16,761 | |||
| PCB permit amortized | [1] | (55) | (55) | ||
| Permit in progress | 56 | ||||
| Permit impairment for M&EC subsidiary | (8,288) | ||||
| Balance | $ 8,419 | $ 8,419 | $ 8,474 | ||
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| X | ||||||||||
- Definition Costs associated with permits in progress. No definition available.
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| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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