Annual report pursuant to Section 13 and 15(d)

Impairments (Details)

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Impairments (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]          
Impairment of goodwill $ 30,500,000 $ 33,664,000 $ 3,203,000 $ 0 [1],[2] $ 0
Impairment of intangible   846,000 1,379,000 0  
Impairment of long-lived assets   7,358,000 5,652,000 4,146,000 [1],[2]  
Impairment of finite lived intangible assets         $ 0
Drilling Rigs          
Property, Plant and Equipment [Line Items]          
Asset impairment charges   3,000,000 4,000,000 3,800,000  
Other property, plant and equipment          
Property, Plant and Equipment [Line Items]          
Asset impairment charges   3,600,000 $ 300,000 $ 300,000  
Customer relationships | Flowback equipment          
Property, Plant and Equipment [Line Items]          
Impairment of goodwill   100,000      
WTL Oil LLC | Customer relationships          
Property, Plant and Equipment [Line Items]          
Impairment of finite lived intangible assets   800,000      
Cementing          
Property, Plant and Equipment [Line Items]          
Impairment of goodwill   3,200,000      
Cementing | Customer relationships          
Property, Plant and Equipment [Line Items]          
Impairment of intangible   1,000,000      
Cementing | Trade names          
Property, Plant and Equipment [Line Items]          
Impairment of intangible   200,000      
Silverback Energy          
Property, Plant and Equipment [Line Items]          
Impairment of intangible   $ 200,000      
[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.