Summary of Significant Accounting Policies - Deferred financing costs (Details) - USD ($) $ in Thousands |
12 Months Ended | |
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Dec. 31, 2017 |
Dec. 31, 2016 |
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Current deferred financing costs | $ 121 | $ 121 |
Deferred financing costs | $ 334 | $ 456 |
Computer Equipment [Member] | ||
Estimated life | 3 years | |
Software [Member] | ||
Estimated life | 3 years | |
Lost Creek Property | ||
Estimated life | 10 years | |
Maximum | Plant enclosure and equipment | ||
Estimated life | 20 years |
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- Definition Amount, after accumulated amortization, of debt issuance costs classified as current. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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