Accounts Receivable-Related Parties (Narrative) (Details) (USD $)
|
0 Months Ended | 3 Months Ended | |||
---|---|---|---|---|---|
Mar. 31, 2013
|
Dec. 31, 2012
|
Jul. 02, 2008
Everest Operations Management LLC [Member]
|
Mar. 31, 2012
Everest Operations Management LLC [Member]
|
Jul. 01, 2008
Everest Operations Management LLC [Member]
|
|
Related Party Transaction [Line Items] | |||||
Accounts receivable-related parties | $ 37,062,000 | $ 34,848,000 | |||
Required notice period, counterparty | 30 days | ||||
Percentage of proportionate share of acquisition or divestiture consideration payable to affiliates | 1.00% | ||||
Reimbursement for general and administrative expenses performed for related party under acquisition team agreement | $ 300,000 |
X | ||||||||||
- Definition
Cancellation of Agreement Required Written Notice Term, Counterparty No definition available.
|
X | ||||||||||
- Definition
gpor_PercentageOfProportionateShareOfAcquisitionOrDivestitureConsiderationPayableToAffiliates No definition available.
|
X | ||||||||||
- Definition
Reimbursement for general and administrative expenses performed for related party under acquisition team agreement. No definition available.
|
X | ||||||||||
- Definition
The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Details
|