Quarterly report pursuant to Section 13 or 15(d)

Leased Properties (Details)

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Leased Properties (Details) (USD $)
3 Months Ended 9 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Pinedale Liquids Gathering System [Member]
Sep. 30, 2014
Pinedale Liquids Gathering System [Member]
mi
Point
Sep. 30, 2013
Pinedale Liquids Gathering System [Member]
Sep. 30, 2014
Pinedale Liquids Gathering System [Member]
Point
Sep. 30, 2013
Pinedale Liquids Gathering System [Member]
Dec. 20, 2012
Secured Debt [Member]
Key Bank [Member]
Pinedale Liquids Gathering System [Member]
Sale Leaseback Transaction [Line Items]                      
Length of transmission lines physical assets             150        
Number of receipt points             107   107    
Estimated useful lives of assets             26 years        
Settlement date           Dec. 20, 2012          
Long-term debt (net of current maturities) $ 64,414,000   $ 64,414,000   $ 67,060,000           $ 70,000,000
Ownership percentage by noncontrolling owners           18.95%          
Non controlling economic interest pinedale GP           81.05%          
Depreciation expense $ 3,237,261 $ 2,857,412 $ 9,573,809 $ 8,571,860     $ 2,200,000 $ 2,200,000 $ 6,700,000 $ 4,400,000