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Equity - Incentive Distribution Rights (Details) - $ / shares
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Equity [Abstract]    
General partner's ownership interest (as percent) 2.00% 2.00%
Incentive Distribution Made to Managing Member or General Partner [Line Items]    
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest, Excess Per Unit Of Cash Distribution $ 0.43125  
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest, Increasing Percentage, Maximum 48.00%