Quarterly report pursuant to Section 13 or 15(d)

Leases Leases (Details)

v2.4.0.8
Leases Leases (Details)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Pinedale Liquids Gathering System [Member]
     
Operating Leased Assets [Line Items]      
Percentage of total leased properties 80.86%   94.23%
Percentage of leased property revenue 75.07% 88.70%  
Portland Terminal Facility [Member]
     
Operating Leased Assets [Line Items]      
Percentage of total leased properties 15.47%   0.00%
Percentage of leased property revenue 15.49% 0.00%  
Public Service Copmany of New Mexico [Member]
     
Operating Leased Assets [Line Items]      
Percentage of total leased properties 3.67%   5.77%
Percentage of leased property revenue 9.44% 11.30%