Quarterly report pursuant to Section 13 or 15(d)

Leased Properties - Pinedale LGS (Details)

v3.3.0.814
Leased Properties - Pinedale LGS (Details)
 1 Months Ended 3 Months Ended 9 Months Ended
Dec. 31, 2012
Sep. 30, 2015
USD ($)
Point
Sep. 30, 2014
USD ($)
Sep. 30, 2015
USD ($)
facility
Point
mi
Sep. 30, 2014
USD ($)
Dec. 31, 2014
USD ($)
Dec. 20, 2012
USD ($)
Sale Leaseback Transaction [Line Items]              
Long-term debt   $ 212,840,918   $ 212,840,918   $ 63,532,000  
Pinedale Liquids Gathering System [Member]              
Sale Leaseback Transaction [Line Items]              
Length of transmission lines physical assets | mi       150      
Number of receipt points | Point   107   107      
Number of Above-ground Central Gathering Facilities | facility       4      
Estimated useful lives of assets       26 years      
Ownership percentage by noncontrolling owners 18.95%            
Non controlling economic interest pinedale GP 81.05%            
Key Bank [Member] | Secured Debt [Member] | Pinedale Liquids Gathering System [Member]              
Sale Leaseback Transaction [Line Items]              
Long-term debt             $ 70,000,000
Assets Leased to Others [Member] | Pinedale Liquids Gathering System [Member]              
Sale Leaseback Transaction [Line Items]              
Depreciation   $ 2,200,000 $ 2,200,000 $ 6,700,000 $ 6,500,000