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Commitments (Details Textual) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended |
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Dec. 31, 2014
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Sep. 30, 2014
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| Commitments And Contingencies Disclosure [Line Items] | ||
| Reclamation bonding requirement | $ 26.7 | |
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Scenario, Forecast [Member]
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| Commitments And Contingencies Disclosure [Line Items] | ||
| Increase In Security Bonds | 2.1 | |
| Total cost of third disposal well | $ 1.2 | $ 3.2 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Increase In Security Bonds No definition available.
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| X | ||||||||||
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- Definition
Represents the amount of reclamation obligations, which are required to be covered by surety performance bonding, as of the balance sheet date. No definition available.
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| X | ||||||||||
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- Definition
The cash outflow for acquisition of or capital improvements on other tangible or intangible assets not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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