Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Business Combinations - Preliminary Allocation of Consideration to the Assets Acquired and Liabilities Assumed (Details)

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Note 4 - Business Combinations - Preliminary Allocation of Consideration to the Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Thousands
 5 Months Ended 6 Months Ended
May 15, 2019
Dec. 06, 2018
Apr. 30, 2019
Apr. 30, 2020
Oct. 31, 2019
Goodwill       $ 222,475 $ 276,088
Capital Pumping [Member]          
Consideration paid: $ 129,218        
Current assets 748        
Intangible assets 45,500        
Property and equipment 56,467        
Liabilities assumed (63)        
Total net assets acquired 102,652        
Goodwill 26,566        
Total consideration paid 129,218        
Total net assets acquired $ 102,652        
CPH Acquisition [Member]          
Consideration paid:   $ 614,344      
Current assets   48,912      
Intangible assets   208,063      
Property and equipment   219,467      
Liabilities assumed   (110,245)      
Total net assets acquired   366,197      
Goodwill   248,147      
Cash   445,386 [1] $ 449,434  
Fair value of rollover equity   164,908      
Net working capital adjustment   4,050      
Total consideration paid   614,344      
Total net assets acquired   $ 366,197      
[1] Note: Cash in table above is net of $1.0 million in cash acquired