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Notes Payable to Members	12 Months Ended
Notes Payable to Members	Dec. 31, 2011
Debt Disclosure [Abstract]
Notes Payable to Members	Notes Payable to Members Predecessors Effective January 1, 2009, GVR Predecessor entered into promissory notes totaling $10.0 million payable to its members. The notes accrued interest at an annual rate of 5.0% and matured on January 1, 2011. These notes were subordinate to GVR Predecessor's senior secured debt and interest rate swaps, and as a result of GVR Predecessor's default on its senior secured debt and interest rate swaps, the notes and accrued interest thereon were not paid upon maturity and the noteholders received no distributions under the GVR Plan.