Annual report pursuant to Section 13 and 15(d)

Leases - Narrative (Details)

v3.3.1.900
Leases - Narrative (Details)
customer in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2015
USD ($)
term
Dec. 31, 2012
Dec. 31, 2015
USD ($)
payment
lease
Sep. 30, 2015
USD ($)
Jun. 30, 2015
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Sep. 30, 2014
USD ($)
Jun. 30, 2014
USD ($)
Mar. 31, 2014
USD ($)
Dec. 31, 2015
USD ($)
payment
lease
customer
bbl
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 20, 2012
USD ($)
Oct. 31, 2012
Operating Leased Assets [Line Items]                              
Number of Significant Leases | lease     3               3        
Number of Remaining Lease Payments | payment     3               3        
Revenues     $ 22,478,932 $ 22,140,450 $ 12,681,670 $ 13,987,883 $ 11,896,126 $ 9,345,878 $ 9,019,012 $ 10,047,557 $ 71,288,935 $ 40,308,573 $ 31,286,020    
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        
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     734,000       796,000       $ 734,000 796,000 857,000    
Deferred Costs Amortization Period                     15 years        
Amortization expense                     $ 61,000 61,000 61,000    
Estimated useful lives of assets                     26 years        
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        
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        
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                     $ 513,000        
Additional Expected Project Costs     10,000,000               10,000,000        
Increase in Rent from Construction     946,000                 241,000 0    
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        
Lease Revenue [Member]                              
Operating Leased Assets [Line Items]                              
Amortization expense                     73,000 292,000 292,000    
Revenues             2,553,000       638,000   2,553,000    
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     321,000       $ 0       $ 321,000 0      
Deferred Costs Amortization Period                     11 years        
Amortization expense     $ 15,000                 $ 0 $ 0    
Estimated useful lives of assets 30 years                            
Depreciation $ 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