Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
Equity Investments - Investments Accounted for by the Equity Method (Details) - USD ($)
 12 Months Ended
May 01, 2018
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
May 31, 2018
Jun. 05, 2017
May 31, 2017
Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]                
Carrying value of equity investments   $ 236,121,000 $ 302,112,000          
(Income) loss from equity method investments   (49,904,000) 17,780,000 $ 37,376,000        
Distributions from equity method investments   $ 446,000 7,376,000 18,147,000        
Investment in Tatex Thailand II, LLC                
Schedule of Equity Method Investments [Line Items]                
Approximate Ownership %   23.50%            
Carrying value of equity investments   $ 0 0          
(Income) loss from equity method investments   (241,000) (549,000) (412,000)        
Distributions from equity method investments   $ 200,000 500,000          
Investment in Tatex Thailand III, LLC                
Schedule of Equity Method Investments [Line Items]                
Approximate Ownership %   0.00%            
Carrying value of equity investments   $ 0 0          
(Income) loss from equity method investments   $ 0   0        
Distributions from equity method investments     183,000          
Investment in Grizzly Oil Sands ULC                
Schedule of Equity Method Investments [Line Items]                
Approximate Ownership %   24.9999%            
Carrying value of equity investments   $ 44,259,000 57,641,000          
(Income) loss from equity method investments   $ 510,000 2,189,000 25,150,000        
Investment in Timber Wolf Terminals LLC                
Schedule of Equity Method Investments [Line Items]                
Approximate Ownership %   0.00%            
Carrying value of equity investments     983,000          
(Income) loss from equity method investments   $ 536,000 8,000 8,000        
Distributions from equity method investments   $ 400,000            
Investment in Windsor Midstream LLC                
Schedule of Equity Method Investments [Line Items]                
Approximate Ownership %   22.50%            
Carrying value of equity investments   $ 39,000 30,000          
(Income) loss from equity method investments   (9,000) 25,233,000 (13,618,000)        
Distributions from equity method investments   $ 0 500,000          
Investment in Stingray Cementing LLC                
Schedule of Equity Method Investments [Line Items]                
Approximate Ownership %   0.00%         50.00%  
Carrying value of equity investments   $ 0            
(Income) loss from equity method investments   $ 0 205,000 263,000        
Investment in Blackhawk Midstream LLC                
Schedule of Equity Method Investments [Line Items]                
Approximate Ownership %   0.00%            
Carrying value of equity investments   $ 0 0          
(Income) loss from equity method investments     0 0        
Distributions from equity method investments   $ 38,000            
Investment in Stingray Energy Services LLC                
Schedule of Equity Method Investments [Line Items]                
Approximate Ownership %   0.00%         50.00%  
Carrying value of equity investments   $ 0 0          
(Income) loss from equity method investments   $ 0 282,000 1,044,000        
Investment in Sturgeon Acquisitions LLC                
Schedule of Equity Method Investments [Line Items]                
Approximate Ownership %   0.00%           25.00%
Carrying value of equity investments   $ 0 0          
(Income) loss from equity method investments   (71,000) $ 993,000        
Investment in Mammoth Energy Services, Inc.                
Schedule of Equity Method Investments [Line Items]                
Approximate Ownership %       24.20%   25.10%   30.50%
Carrying value of equity investments   191,823,000 165,715,000          
(Income) loss from equity method investments   $ (49,969,000) (11,288,000) $ 24,037,000        
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 77,743,000          
(Income) loss from equity method investments   (693,000) 1,954,000 $ (89,000)        
Distributions from equity method investments $ 175,000,000 $ 800,000 $ 6,900,000