|
Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified |
9 Months Ended | ||
|---|---|---|---|
|
9月. 30, 2012
|
9月. 30, 2011
|
12月. 31, 2011
|
|
| Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| 资产 | $ 808 | $ 1,601 | |
| Asset retirement obligations incurred | 1,711 | 939 | |
|
Level 1 [Member] | Fixed Price Swaps [Member]
|
|||
| Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| 资产 | |||
| 负债 | |||
|
Level 2 [Member] | Fixed Price Swaps [Member]
|
|||
| Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| 资产 | 808 | ||
| 负债 | 10,339 | ||
|
Level 3 [Member]
|
|||
| Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| Asset retirement obligations incurred | 1,711 | ||
|
Level 3 [Member] | Fixed Price Swaps [Member]
|
|||
| Fair Value, 资产 and 负债 Measured on Recurring and Nonrecurring Basis [Line Items] | |||
| 资产 | |||
| 负债 | |||
| X | ||||||||||
|
——定义
Amount of asset retirement obligations incurred during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
——定义
Fair values as of the balance sheet date for all assets resulting from contracts that meet the criteria of being accounted for as derivative instruments and which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, 如果再, net of the effects of master netting arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
——定义
Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
——细节
|