Income Taxes (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Capitalized start-up costs | $ 2,500,000 | $ 3,000,000 |
| Abandonment loss | 0 | 200,000 |
| Stock-based compensation - net | 8,800,000 | 8,900,000 |
| Accruals | 300,000 | 500,000 |
| Net operating loss carry-forward | 62,500,000 | 56,000,000 |
| Less: valuation allowance | (74,100,000) | (68,600,000) |
| Total | ||
| Deferred Tax Asset [Member] | ||
| Capitalized start-up costs | 600,000 | 1,100,000 |
| Abandonment loss | 0 | 100,000 |
| Stock-based compensation - net | 2,200,000 | 3,400,000 |
| Accruals | 100,000 | 200,000 |
| Net operating loss carry-forward | 16,100,000 | 21,300,000 |
| Less: valuation allowance | (19,000,000) | (26,100,000) |
| Total | ||
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- References No definition available.
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- Definition The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. No definition available.
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| X | ||||||||||
- Definition Exploration costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes. No definition available.
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| X | ||||||||||
- Definition The total amount of other operating income, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of loss (recovery of loss) related to a plant abandonment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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