v3.21.2
PARTNERS' EQUITY Table 1 - Cash Distributions - Preferred Units (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Series A Preferred Limited Partner [Member]    
Distribution Made to Preferred Limited Partner [Line Items]    
Preferred units distribution percentage, per annum   8.50%
Preferred unit distribution $ 0.53125  
Fixed distribution per quarter $ 4,813  
Series B Preferred Limited Partner [Member]    
Distribution Made to Preferred Limited Partner [Line Items]    
Preferred units distribution percentage, per annum   7.625%
Preferred unit distribution $ 0.47657  
Fixed distribution per quarter $ 7,339  
Series C Preferred Limited Partner [Member]    
Distribution Made to Preferred Limited Partner [Line Items]    
Preferred units distribution percentage, per annum   9.00%
Preferred unit distribution $ 0.56250  
Fixed distribution per quarter $ 3,881