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Commitments and Contingencies (Details) (USD $)
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12 Months Ended |
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Dec. 31, 2011
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| Loss Contingencies [Line Items] | |
| Long-term Purchase Commitment, Amount | $ 4,700,000 |
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West Gude [Member]
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| Loss Contingencies [Line Items] | |
| Letters of Credit Outstanding, Amount | $ 815,000 |
| X | ||||||||||
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- Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
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| X | ||||||||||
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- Definition
The minimum amount the entity agreed to spend under the long-term purchase commitment. No definition available.
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| X | ||||||||||
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- Details
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