Quarterly report pursuant to Section 13 or 15(d)

Leased Properties and Leases - Additional Information (Details)

v3.19.1
Leased Properties and Leases - Additional Information (Details)
bbl / d in Thousands
 3 Months Ended
Mar. 31, 2019
USD ($)
a
bbl / d
facility
leased_property
mi
Sale Leaseback Transaction [Line Items]  
Number of significant leased properties | leased_property 2
Minimum [Member]  
Sale Leaseback Transaction [Line Items]  
Initial Lease Term 11 years
Maximum [Member]  
Sale Leaseback Transaction [Line Items]  
Initial Lease Term 15 years
Grand Isle Gathering System [Member]  
Sale Leaseback Transaction [Line Items]  
Initial Lease Term 11 years
Renewal Option 9 years
Renewal Term, percentage of remaining useful life 75.00%
Length of offshore pipeline (in miles) | mi 153
Pipeline capacity (in bbl/day) | bbl / d 120
Number of acres in the onshore terminal and saltwater disposal system (in acres) | a 16
Current Monthly Rent Payments $ 2,860,917
Expected future monthly rent payments $ 3,223,917
Initial Estimated Useful Life 27 years
Pinedale Liquids Gathering System [Member]  
Sale Leaseback Transaction [Line Items]  
Initial Lease Term 15 years
Renewal Option 5 years
Length of offshore pipeline (in miles) | mi 150
Number of storage facilities | facility 4
Current Monthly Rent Payments $ 1,812,307
Initial Estimated Useful Life 26 years
Operating Subsidiaries  
Sale Leaseback Transaction [Line Items]  
Initial Lease Term 2 years