XML 99 R72.htm IDEA: XBRL DOCUMENT v3.20.4
Equity Method Investments - Narrative (Details)
$ in Thousands
1 Months Ended 12 Months Ended
May 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
joint_venture
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Schedule of Equity Method Investments [Line Items]        
Equity method investments   $ 253,675 $ 246,984  
Equity method investment contributions   $ 12,175 $ 139,294 $ 173
Number of joint ventures | joint_venture   3    
Red River        
Schedule of Equity Method Investments [Line Items]        
Equity method investments $ 124,700      
Equity method investment, ownership percentage 33.00%      
Red River Start Up Capital        
Schedule of Equity Method Investments [Line Items]        
Equity method investment contributions $ 400      
Red River Expansion        
Schedule of Equity Method Investments [Line Items]        
Equity method investment contributions $ 3,500 $ 12,200    
CP LLC And Rangeland Energy        
Schedule of Equity Method Investments [Line Items]        
Number of joint ventures | joint_venture   2    
CP LLC        
Schedule of Equity Method Investments [Line Items]        
Equity method investment, ownership percentage   50.00%    
Rangeland Rio        
Schedule of Equity Method Investments [Line Items]        
Equity method investment, ownership percentage   33.00%