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Commitments and Contingencies (Commitments) (Details) (USD $)
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0 Months Ended | 0 Months Ended | ||||||||||
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Nov. 02, 2012
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Mar. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Mar. 11, 1997
WCBB [Member]
wells
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Mar. 31, 2013
WCBB [Member]
wells
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Dec. 31, 2012
WCBB [Member]
wells
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Mar. 31, 2013
Executive Officer [Member]
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Dec. 31, 2012
Executive Officer [Member]
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Mar. 31, 2013
Grizzly [Member]
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Dec. 31, 2012
Grizzly [Member]
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Oct. 05, 2012
Grizzly [Member]
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| Commitments [Line Items] | ||||||||||||
| Percentage of interest in WCBB | 50.00% | |||||||||||
| Contribution to plugging and abandonment trust | $ 18,000 | |||||||||||
| Annual minimum wells to be plugged | 20 | |||||||||||
| Tenure of minimum wells to be plugged, years | 20 years | |||||||||||
| Plugging and abandonment escrow account on the WCBB properties (Note 17) | 3,113,000 | 3,113,000 | 3,121,000 | |||||||||
| Number of wells plugged | 354 | 354 | ||||||||||
| Employement agreement | 3 years | |||||||||||
| Extension period | 1 year | |||||||||||
| Notice period | 90 days | |||||||||||
| Other Commitment | 7,600,000 | 7,050,000 | ||||||||||
| Contractual obligation for future salaries and benefits | $ 12,400,000 | $ 6,300,000 | $ 8,500,000 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Employment Agreement, Notice Period Allowed For Termination No definition available.
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| X | ||||||||||
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- Definition
Employment Agreement, Subsequent Extension No definition available.
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| X | ||||||||||
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- Definition
Employment Agreement, Term No definition available.
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| X | ||||||||||
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- Definition
Number Of Wells Plugged No definition available.
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| X | ||||||||||
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- Definition
payments to plugging and abandonment escrow account. No definition available.
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| X | ||||||||||
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- Definition
Plugging And Abandonment Escrow Account No definition available.
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| X | ||||||||||
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- Definition
Purchasing remaining percent interest in oil and gas property. No definition available.
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| X | ||||||||||
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- Definition
Minimum number of wells required to be plugged annually. No definition available.
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| X | ||||||||||
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- Definition
Tenure of minimum wells to be plugged No definition available.
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| X | ||||||||||
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- Definition
Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments. No definition available.
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| X | ||||||||||
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- Definition
Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
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