|
Accounts Receivable-Related Party (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Sep. 30, 2012
|
Dec. 31, 2011
|
Sep. 28, 2012
Charles E. Davidson [Member]
|
Dec. 31, 2011
Charles E. Davidson [Member]
|
Mar. 01, 2008
Charles E. Davidson [Member]
|
Sep. 30, 2012
Everest Operations Management LLC [Member]
|
Sep. 30, 2011
Everest Operations Management LLC [Member]
|
Sep. 30, 2012
Everest Operations Management LLC [Member]
|
Sep. 30, 2011
Everest Operations Management LLC [Member]
|
Sep. 30, 2012
Windsor Niobrara LLC [Member]
|
|
| Related Party Transaction [Line Items] | ||||||||||
| Affiliates Participation Percentage in Acquisition of Leases | 50.00% | |||||||||
| Accounts receivable-related parties | $ 10,915 | $ 4,731 | ||||||||
| Reimbursement for general and administrative expenses performed for related party under acquisition team agreement | $ 360 | $ 466 | $ 893 | $ 867 | ||||||
| Common Stock Ownership Percentage Per Individual | 0.01 | 0.133 | ||||||||
| Percentage of Proportionate Share of the Acquisition or Divestiture Consideration Payable to Affiliates | 1.00% | 1.00% | ||||||||
| Cancellation of Agreement Required Written Notice Term | 60 days | |||||||||
| Cancellation of Agreement Required Wrriten Notice Term, Counterparty | 30 days | |||||||||
| Breech of Contract, Cure Period | 30 days | |||||||||