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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2011
Property, Plant and Equipment [Abstract]  
Schedule of Property, Plant and Equipment
  December 31,
  2011 2010
  Cost Accumulated Depreciation Net Book Value Net Book Value
Gathering systems$ 226,747$ (7,736)$ 219,011$ 141,817
Computer equipment  2,426  (1,401)  1,025  993
Office equipment  444  (335)  109  124
Leasehold improvements  686  (379)  307  151
Land  22,150  -  22,150  2,437
Other  7,777  (3,793)  3,984  3,582
Property, Plant and Equipment, Net$ 260,230$ (13,644)$ 246,586$ 149,104