Quarterly report pursuant to Section 13 or 15(d)

Leased Properties - Grand Isle Gathering System (Details)

v3.3.0.814
Leased Properties - Grand Isle Gathering System (Details)
 3 Months Ended 9 Months Ended
Jun. 23, 2015
USD ($)
a
oil_field
well
tanks
mi
shares
Sep. 30, 2015
USD ($)
shares
Sep. 30, 2014
USD ($)
Sep. 30, 2015
USD ($)
shares
Sep. 30, 2014
USD ($)
Mar. 31, 2015
bbl
Dec. 31, 2014
shares
Sale Leaseback Transaction [Line Items]              
Shares of common stock offered | shares 12,937,500 59,629,941   59,629,941     46,605,055
Net offering proceeds on common stock $ 73,500,000     $ 73,184,680 $ 45,624,563    
Net proceeds of convertible debt 111,300,000     111,262,500 0    
Advances on revolving line of credit       45,392,332 2,535,671    
Asset acquisition costs   $ 792,939 $ 725,455 2,451,485 1,427,046    
Senior Credit Facility [Member]              
Sale Leaseback Transaction [Line Items]              
Advances on revolving line of credit $ 42,000,000            
Grand Isle Gathering System [Member]              
Sale Leaseback Transaction [Line Items]              
Length of offshore pipeline | mi 153            
Number of producing oil fields | oil_field 7            
Number of acres in the onshore terminal and saltwater disposal system | a 16            
Number of storage tanks | tanks 4            
Number of injection wells | well 3            
Volume of fluid GIGS transported | bbl           60,000  
Volume of oil GIGS transported | bbl           18,000  
Volume of water GIGS transported | bbl           42,000  
Total capacity GIGS can transport, volume | bbl           120,000  
Estimated useful lives of assets 30 years            
Grand Isle Gathering System [Member] | Energy XXI GIGS Services, LLC [Member]              
Sale Leaseback Transaction [Line Items]              
Number of producing oil fields | oil_field 6            
Grand Isle Gathering System [Member] | ExxonMobil [Member]              
Sale Leaseback Transaction [Line Items]              
Number of producing oil fields | oil_field 1            
Assets Leased to Others [Member] | Grand Isle Gathering System [Member]              
Sale Leaseback Transaction [Line Items]              
Depreciation   $ 2,200,000 $ 0 $ 2,200,000 $ 0    
Grand Isle Gathering System [Member] | Grand Isle Corridor, LP [Member]              
Sale Leaseback Transaction [Line Items]              
Cash portion of consideration $ 245,000,000            
Liabilities assumed in acquisition 12,200,000            
Asset acquisition costs 1,900,000            
Deferred leasing costs 298,000            
Total consideration $ 259,300,000