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Supplemental Oil and Gas Disclosures (Unaudited) (Details 3) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Changes in Discounted Future Net Cash Flows Detail [Table] |  |  |
Standardized measure, beginning of year | $ 0 | $ 6,475 | $ 133,269
Sales, net of production costs | 0 | (2,409) | (48,445)
Net change in prices, net of production costs | 0 | 0 | (11,916)
Changes in future development and abandonment costs | 0 | 0 | 43,792
Development and abandonment costs incurred | 0 | 0 | 25,083
Accretion of discount | 0 | 0 | 17,909
Net change in income taxes | 0 | 0 | 44,612
Purchases of reserves in place | 0 | 0 | 0
Extensions and discoveries | 0 | 0 | 0
Sales of reserves in place | 0 | (7,918) | (198,324)
Net change due to revision in quantity estimates | 0 | 0 | (10,814)
Changes in production rates (timing) and other | 0 | 3,852 | 11,309
Subtotal | 0 | (6,475) | (126,794)
Standardized measure, end of year | $ 0 | $ 0 | $ 6,475

X
- Definition The increase (decrease) in the evaluation or calculation of the costs that will be required in future periods to make it possible to extract or process proved oil and gas reserves, and the increase (decrease) in future abandonment and decommissioning obligations. + References No definition available. + Details
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- Definition The actual costs incurred during the reporting period to make it possible to extract or process proved oil and gas reserves, and the actual amount of asset retirement obligation (ARO) costs incurred during the reporting period . These costs were previously estimated and reduced the estimate of discounted future cash flows from oil and gas reserves. + References No definition available. + Details
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of passage of time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 + Details
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- Definition Amount of decrease in standardized measure of discounted future net cash flow as a result of sales of minerals in place. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 + Details
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of extensions, discoveries and improved recovery of proved oil and gas reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 + Details
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in the estimated future income tax on future pretax net cash flows related to the entity's proved oil and gas reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62500-109447 + Details
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