Annual report pursuant to Section 13 and 15(d)

Acquisitions - Consideration Transferred Stingray Acquisition (Details)

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Acquisitions - Consideration Transferred Stingray Acquisition (Details) - USD ($)
$ in Thousands
Jun. 05, 2017
May 26, 2017
Business Acquisition [Line Items]    
Total consideration transferred $ 25,762 $ 36,320
Cementing    
Business Acquisition [Line Items]    
Total consideration transferred 12,975  
SR Energy    
Business Acquisition [Line Items]    
Total consideration transferred $ 12,787