Quarterly report pursuant to Section 13 or 15(d)

Leases - Narrative (Details)

v3.4.0.3
Leases - Narrative (Details)
$ in Thousands
 1 Months Ended 3 Months Ended
Jun. 30, 2015
USD ($)
term
Dec. 31, 2012
Mar. 31, 2016
USD ($)
lease
bbl
Mar. 31, 2015
USD ($)
Mar. 31, 2014
USD ($)
Jan. 01, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 20, 2012
USD ($)
Operating Leased Assets [Line Items]                
Number of Significant Leases | lease     3          
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 $ 10        
Deferred lease costs, net of accumulated amortization of $139,983 and $124,641     $ 719       $ 734  
Deferred Costs Amortization Period     15 years          
Amortization expense     $ 15 15        
Estimated useful lives of assets     26 years          
Minimum [Member] | Pinedale Liquids Gathering System [Member]                
Operating Leased Assets [Line Items]                
Operating Lease, Annual Rent Payment               $ 20,000
Maximum [Member] | Pinedale Liquids Gathering System [Member]                
Operating Leased Assets [Line Items]                
Operating Lease, Annual Rent Payment               $ 27,500
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%          
Additional Expected Project Costs     $ 10,000          
Operating Lease, Annual Rent Payment           $ 6,200    
Base rent       1,500 $ 1,400      
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     $ 313       $ 321  
Deferred Costs Amortization Period     11 years          
Amortization expense     $ 8 $ 0        
Estimated useful lives of assets 30 years              
Depreciation $ 8,600              
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              
Minimum monthly rental payments during year seven 4,200              
Minimum monthly rental payments during year eleven $ 3,500