Quarterly report pursuant to Section 13 or 15(d)

Leases - Narrative (Details)

v3.2.0.727
Leases - Narrative (Details)
customer in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2015
USD ($)
payment
lease
term
Dec. 31, 2012
Jun. 30, 2015
USD ($)
payment
lease
Jun. 30, 2014
USD ($)
Jun. 30, 2015
USD ($)
payment
lease
customer
bbl
Jun. 30, 2014
USD ($)
Dec. 31, 2014
USD ($)
Dec. 20, 2012
USD ($)
Oct. 31, 2012
Operating Leased Assets [Line Items]                  
Number of Significant Leases | lease 3   3   3        
Deferred Costs Amortization Period         3 years        
Number of Remaining Lease Payments | payment 3   3   3        
Revenues     $ 12,681,670 $ 9,019,012 $ 26,669,553 $ 19,066,569      
Public Service Company of New Mexico [Member]                  
Operating Leased Assets [Line Items]                  
Number of Customers Served | customer         500        
Sales Lease Back Intangible Asset Amortized $ 1,100,000   1,100,000   $ 1,100,000        
Business Acquisition, Percentage of Voting Interests Acquired                 40.00%
Lease Expiration Date         Apr. 01, 2015        
Lease Rental Receipt Semi Annually         $ 1,400,000        
Pinedale Liquids Gathering System [Member]                  
Operating Leased Assets [Line Items]                  
Settlement date   Dec. 20, 2012              
Term of contract   15 years              
Renewal term   5 years              
Annual Rent Escalator   2.00%              
Rent, Quarterly Increase, Based on CPI         5,200,000   $ 85,000    
Deferred lease costs, net of accumulated amortization of $139,983 and $124,641 699,000   699,000   $ 699,000   727,000    
Deferred Costs Amortization Period         15 years        
Amortization expense     14,000   $ 28,000        
Property, Plant and Equipment, Useful Life         26 years        
Depreciation expense     2,200,000 2,200,000 $ 4,300,000 4,300,000      
Pinedale Liquids Gathering System [Member] | Real Property [Member]                  
Operating Leased Assets [Line Items]                  
Business Combination, Contingent Consideration, Asset, Noncurrent 122,300,000   122,300,000   122,300,000        
Pinedale Liquids Gathering System [Member] | Land Rights [Member]                  
Operating Leased Assets [Line Items]                  
Business Combination, Contingent Consideration, Asset, Noncurrent 105,700,000   105,700,000   $ 105,700,000        
Minimum [Member] | Pinedale Liquids Gathering System [Member]                  
Operating Leased Assets [Line Items]                  
Operating Lease, Annual Rent Payment               $ 20,000,000  
Maximum [Member] | Pinedale Liquids Gathering System [Member]                  
Operating Leased Assets [Line Items]                  
Operating Lease, Annual Rent Payment               $ 27,500,000  
Portland Terminal Facility [Member]                  
Operating Leased Assets [Line Items]                  
Term of contract         15 years        
Variable rent payment, daily volume threshold | bbl         12,500        
Variable rent payment, maximum percent of total rent         30.00%        
Amount monthly rent is increased to         $ 500,000        
Additional Expected Project Costs 8,800,000   8,800,000   8,800,000        
Construction and Development Costs         10,000,000        
Increase in Rent from Construction     229,000   402,000        
Future Expectations [Member] | Public Service Company of New Mexico [Member]                  
Operating Leased Assets [Line Items]                  
Fair Value of Lease Option Under Agreement $ 7,700,000   7,700,000   7,700,000        
Lease Revenue [Member]                  
Operating Leased Assets [Line Items]                  
Amortization expense     0 73,000 73,000 146,000      
Revenues     0 $ 638,000 638,000 $ 1,276,000      
Property Subject to Operating Lease [Member] | Grand Isle Gathering System [Member]                  
Operating Leased Assets [Line Items]                  
Term of contract 11 years                
Number of additional renewal terms | term 1                
Variable rent payment, maximum percent of total rent 39.00%                
Renewal term 9 years                
Expected remaining useful life of asset 75.00%                
Deferred lease costs, net of accumulated amortization of $139,983 and $124,641 $ 298,000   $ 298,000   $ 298,000   $ 0    
Deferred Costs Amortization Period         11 years        
Property, Plant and Equipment, Useful Life 30 years                
Depreciation expense $ 8,600,000                
Energy XXI GIGS Services, LLC [Member] | Property Subject to Operating Lease [Member] | Grand Isle Gathering System [Member]                  
Operating Leased Assets [Line Items]                  
Minimum monthly rental payments during year one 2,600,000                
Minimum monthly rental payments during year seven 4,200,000                
Minimum monthly rental payments during year eleven $ 3,500,000