Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Schedule Of Changes in Goodwill (Details)

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Goodwill and Intangible Assets - Schedule Of Changes in Goodwill (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Jun. 05, 2017
Goodwill [Roll Forward]            
Goodwill, gross period start   $ 104,448,000 $ 99,811,000      
Accumulated impairment losses $ (36,867,000) (36,867,000) (3,203,000) $ 0    
Goodwill 67,581,000 67,581,000 101,245,000 99,811,000   $ 10,193,000
Acquisitions   0 4,637,000      
Impairment losses (30,500,000) (33,664,000) (3,203,000) 0 [1],[2] $ 0  
Goodwill, gross period end 104,448,000 104,448,000 104,448,000 99,811,000    
Infrastructure            
Goodwill [Roll Forward]            
Goodwill, gross period start   3,828,000 891,000      
Accumulated impairment losses (434,000) (434,000) 0 0    
Goodwill 3,394,000 3,394,000 3,828,000 891,000    
Acquisitions   0 2,937,000      
Impairment losses   (434,000) 0      
Goodwill, gross period end 3,828,000 3,828,000 3,828,000 891,000    
Pressure Pumping            
Goodwill [Roll Forward]            
Goodwill, gross period start   86,043,000 86,043,000      
Accumulated impairment losses (23,423,000) (23,423,000) 0 0    
Goodwill 62,620,000 62,620,000 86,043,000 86,043,000    
Acquisitions   0 0      
Impairment losses   (23,423,000) 0      
Goodwill, gross period end 86,043,000 86,043,000 86,043,000 86,043,000    
Sand            
Goodwill [Roll Forward]            
Goodwill, gross period start   2,684,000 2,684,000      
Accumulated impairment losses (2,684,000) (2,684,000) 0 0    
Goodwill 0 0 2,684,000 2,684,000    
Acquisitions   0 0      
Impairment losses   (2,684,000) 0      
Goodwill, gross period end 2,684,000 2,684,000 2,684,000 2,684,000    
Other            
Goodwill [Roll Forward]            
Goodwill, gross period start   11,893,000 10,193,000      
Accumulated impairment losses (10,326,000) (10,326,000) (3,203,000) 0    
Goodwill 1,567,000 1,567,000 8,690,000 10,193,000    
Acquisitions   0 1,700,000      
Impairment losses   (7,123,000) (3,203,000)      
Goodwill, gross period end $ 11,893,000 $ 11,893,000 $ 11,893,000 $ 10,193,000    
[1] (a) Financial information includes the results attributable to Sturgeon for the entire period presented. See Note 4.
[2] Financial information includes the results attributable to Sturgeon for the entire period presented. See Note 4.