Annual report pursuant to Section 13 and 15(d)

Equity Investments - Investments Accounted for by the Equity Method (Details)

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Equity Investments - Investments Accounted for by the Equity Method (Details) - USD ($)
12 Months Ended
May 01, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
May 31, 2018
Schedule of Equity Method Investments [Line Items]          
Carrying value of equity investments   $ 32,044,000 $ 236,121,000    
Loss (income) from equity method investments   210,148,000 (49,904,000) $ 17,780,000  
Distributions from equity method investments   $ 1,945,000 446,000 7,376,000  
Investment in Tatex Thailand II, LLC          
Schedule of Equity Method Investments [Line Items]          
Approximate Ownership %   23.50%      
Carrying value of equity investments   $ 0 0    
Loss (income) from equity method investments   (2,086,000) (241,000) (549,000)  
Distributions from equity method investments   $ 2,100,000 200,000    
Investment in Tatex Thailand III, LLC(1)          
Schedule of Equity Method Investments [Line Items]          
Approximate Ownership %   0.00%      
Carrying value of equity investments   $ 0 0    
Loss (income) from equity method investments   $ 0 0 183,000  
Investment in Grizzly Oil Sands ULC          
Schedule of Equity Method Investments [Line Items]          
Approximate Ownership %   24.9999%      
Carrying value of equity investments   $ 21,000,000 44,259,000    
Loss (income) from equity method investments   $ (32,710,000) (510,000) (2,189,000)  
Investment in Timber Wolf Terminals LLC          
Schedule of Equity Method Investments [Line Items]          
Approximate Ownership %   0.00%      
Loss (income) from equity method investments   $ 0 536,000 8,000  
Investment in Windsor Midstream LLC          
Schedule of Equity Method Investments [Line Items]          
Approximate Ownership %   22.50%      
Carrying value of equity investments   $ 39,000 39,000    
Loss (income) from equity method investments   0 (9,000) 25,233,000  
Distributions from equity method investments   $ 0      
Investment in Stingray Cementing LLC          
Schedule of Equity Method Investments [Line Items]          
Approximate Ownership %   0.00%      
Carrying value of equity investments   $ 0      
Loss (income) from equity method investments   $ 0 0 205,000  
Investment in Blackhawk Midstream LLC          
Schedule of Equity Method Investments [Line Items]          
Approximate Ownership %   0.00%      
Carrying value of equity investments   $ 0 0    
Loss (income) from equity method investments   $ 0 (38,000) 0  
Investment in Stingray Energy Services LLC          
Schedule of Equity Method Investments [Line Items]          
Approximate Ownership %   0.00%      
Carrying value of equity investments   $ 0 0    
Loss (income) from equity method investments   $ 0 0 282,000  
Investment in Sturgeon Acquisitions LLC          
Schedule of Equity Method Investments [Line Items]          
Approximate Ownership %   0.00%      
Carrying value of equity investments   $ 0 0    
Loss (income) from equity method investments   0 (71,000)  
Investment in Mammoth Energy Services, Inc.          
Schedule of Equity Method Investments [Line Items]          
Carrying value of equity investments   11,005,000 191,823,000    
Loss (income) from equity method investments   179,524,000 (49,969,000) 11,288,000  
Distributions from equity method investments   $ 2,500,000      
Investment in Strike Force Midstream LLC          
Schedule of Equity Method Investments [Line Items]          
Approximate Ownership % 25.00% 0.00%     25.00%
Carrying value of equity investments   $ 0 0    
Loss (income) from equity method investments   $ 0 $ (693,000) $ 1,954,000  
Distributions from equity method investments $ 175,000,000.0        
Net of transaction fees $ 96,400,000