Quarterly report pursuant to Section 13 or 15(d)

Leased Properties and Leases - Significant Leases (Details)

v3.19.1
Leased Properties and Leases - Significant Leases (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Pinedale LGS [Member]      
Operating Leased Assets [Line Items]      
Percentage of total leased properties 44.40%   44.50%
Percentage of leased property revenue 39.10% 32.80%  
Variable rent $ 1,100 $ 437  
Grand Isle Gathering System [Member]      
Operating Leased Assets [Line Items]      
Percentage of total leased properties 55.20%   55.20%
Percentage of leased property revenue 60.80% 57.80%  
Portland Terminal Facility [Member]      
Operating Leased Assets [Line Items]      
Percentage of total leased properties 0.00%   0.00%
Percentage of leased property revenue 0.00% 9.30%