|
Hedging Activities (Narrative) (Details) (USD $)
|
0 Months Ended | 1 Months Ended | 2 Months Ended | 3 Months Ended | 4 Months Ended | 5 Months Ended | 10 Months Ended | 12 Months Ended | |
|---|---|---|---|---|---|---|---|---|---|
|
Feb. 13, 2012
|
Mar. 31, 2009
bbl
|
Feb. 28, 2010
|
Jun. 30, 2009
bbl
|
Dec. 31, 2009
|
Aug. 31, 2009
|
Dec. 31, 2010
|
Dec. 31, 2011
|
Dec. 31, 2009
|
|
| Hedging Activities [Abstract] | |||||||||
| 预计将在未来12个月内从累计其他综合收益中重新分类 | $ 1,576,000 | ||||||||
| Gain on hedging effectiveness | 25,000 | ||||||||
| Production barrels per day | 1,000 | 3,000 | 3,000 | 3,000 | 2,300 | 2,000 | |||
| Forward sales contract price | 54.81 | 54.81 | 55.17 | 58.24 | |||||
| Terminated forward sales contracts volume | 3,000 | 3,000 | |||||||
| Terminated forward sales contracts amount | 1,500,000 | 476,000 | |||||||
| 衍生品合同终止金额包括在石油和凝析油销售中 | $ 2,000,000 | ||||||||
| 在固定价格互换下交付的产量百分比 | 31.00% | ||||||||
| X | ||||||||||
|
- Definition
在固定价格互换下交付的产量百分比. No definition available.
|
| X | ||||||||||
|
- Definition
在结算金额包含在石油和凝析油销售中期间终止的衍生品合同. No definition available.
|
| X | ||||||||||
|
- Definition
Forward Sales Weighted Average Daily Contract Price No definition available.
|
| X | ||||||||||
|
- Definition
Production volume per day in barrels under contract. No definition available.
|
| X | ||||||||||
|
- Definition
Terminated forward sales contracts amount No definition available.
|
| X | ||||||||||
|
- Definition
Terminated forward sales contracts volume No definition available.
|
| X | ||||||||||
|
- Definition
在报告日预计将在未来12个月内重新分类为收益的现有现金流套期损益估计净额. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
指定或符合套期工具资格的衍生工具的利得部分代表(a)套期无效的金额和(b)金额, if any, excluded from the assessment of hedge effectiveness. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|