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Acquisition of Versature Corp (Tables)
9 Months Ended
Apr. 30, 2019
Acquisition of Versature Corp [Abstract]  
Schedule of consolidated balance sheet and acquisition date fair value of total consideration transferred
Trade accounts receivable $370 
Prepaid expenses  65 
Property, plant and equipment  1,826 
Non-compete agreement  600 
Customer relationships  3,003 
Tradename  490 
Other assets  486 
Trade accounts payable  (81)
Accrued expenses  (523)
Other liabilities  (710)
Net assets excluding cash acquired $5,526 
Supplemental information:    
Cash paid $5,943 
Cash acquired  (417)
Total consideration, net of cash acquired $5,526 
Schedule of business acquisition pro forma information
  Three Months Ended
April 30,
  Nine Months Ended
April 30,
 
  2019  2018  2019  2018 
  (in thousands) 
Revenues $341,255  $367,088  $1,053,928  $1,159,372 
                 
Net income (loss) $4,157  $(3,236) $3,289  $(3,555)