XML 100 R73.htm IDEA: XBRL DOCUMENT v3.20.4
Equity Method Investments - Summarized Financial Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 8 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]                        
Current assets $ 29,309       $ 33,570       $ 33,570 $ 29,309 $ 33,570  
Current liabilities 28,300       35,082       35,082 28,300 35,082  
Non-current liabilities 1,036,418       860,484       860,484 1,036,418 860,484  
Revenues 140,112 $ 142,268 $ 117,637 $ 163,401 138,610 $ 137,556 $ 155,342 $ 152,483   563,418 583,992 $ 657,609
Operating income 45,105 $ 51,765 $ 47,881 $ 35,042 29,715 $ 34,729 $ 32,256 $ 29,111   179,793 125,812 125,757
Net income attributable to partners                   159,256 96,749 90,182
Red River | Red River                        
Schedule of Equity Method Investments [Line Items]                        
Current assets 13,488       9,278       9,278 13,488 9,278  
Non-current assets 413,259       381,778       381,778 413,259 381,778  
Current liabilities 7,789       8,291       8,291 7,789 8,291  
Revenues                 38,352 51,001    
Red River | Equity Method Investment, Nonconsolidated Investee or Group of Investees                        
Schedule of Equity Method Investments [Line Items]                        
Gross profit                 25,919 31,103    
Operating income                 25,497 30,382    
Net income attributable to partners                 25,548 30,404    
Joint Ventures | Equity Method Investment, Nonconsolidated Investee or Group of Investees                        
Schedule of Equity Method Investments [Line Items]                        
Current assets 20,763       29,476       29,476 20,763 29,476  
Non-current assets 253,862       262,300       262,300 253,862 262,300  
Current liabilities 1,496       6,391       6,391 1,496 6,391  
Non-current liabilities $ 0       $ 8       $ 8 0 8  
Revenues                   55,482 48,703 35,050
Gross profit                   36,904 30,473 17,690
Operating income                   34,951 28,503 12,909
Net income attributable to partners                   $ 34,977 $ 28,601 $ 15,701