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Partnership Units and Related Matters - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended
Apr. 30, 2018
Oct. 31, 2015
Mar. 31, 2018
Limited Partners Capital Account [Line Items]      
Capital contributions to partnership     $ 60.0
Limited partner capital contribution allocation percentage     98.00%
General partner capital contribution allocation percentage     2.00%
Preferred Units Issued   5,000,000  
Subsequent Event [Member]      
Limited Partners Capital Account [Line Items]      
Distributions declaration month 2018-04    
Distribution declared $ 0.1875    
Distributions payable date May 15, 2018    
Series A Preferred Units [Member]      
Limited Partners Capital Account [Line Items]      
Preferred unit, distribution interest rate   9.00%  
Series A Cumulative Redeemable Perpetual Preferred Units [Member]      
Limited Partners Capital Account [Line Items]      
Distribution to preferred unitholders     $ 2.8
Series A Cumulative Redeemable Perpetual Preferred Units [Member] | LIBOR [Member]      
Limited Partners Capital Account [Line Items]      
Percentage of variable interest rate for distribution on preferred units upon maturity   7.71%