Annual report pursuant to Section 13 and 15(d)

Acquisitions - Schedule of Assets Acquired and Liabilities Assumed Chieftrain Sand and Proppant LLC (Details)

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Acquisitions - Schedule of Assets Acquired and Liabilities Assumed Chieftrain Sand and Proppant LLC (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
May 24, 2017
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
 [1],[2]
Dec. 31, 2016
 [3],[4]
Business Acquisition [Line Items]                
Bargain purchase gain, net of tax   $ 0 $ 0 $ (4,012) $ 0 $ 0 $ (4,012) $ 0
Chieftain Acquisition                
Business Acquisition [Line Items]                
Property, plant and equipment $ 23,373              
Sand reserves 20,910              
Total assets acquired 44,283              
Asset retirement obligation 1,732              
Total liabilities assumed 1,732              
Total allocation of purchase price 42,551              
Bargain purchase gain, net of tax (6,231)              
Total purchase price 36,320              
Bargain purchase, gain recognized, tax amount $ 2,200              
[1] 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.
[3] Financial information has been recast to include results attributable to Sturgeon. See Note 4.
[4] Financial information has been recast to include results attributable to Sturgeon. See Note 4.