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Goodwill (Tables)
12 Months Ended
Jul. 31, 2021
Goodwill [Abstract]  
Schedule of goodwill by segment
The following table represents goodwill by reportable operating segment, including the changes in the net carrying value of goodwill as of July 31, 2021:
Commercial SolutionsGovernment SolutionsTotal
Balance as of July 31, 2020$255,432,000 75,087,000 $330,519,000 
Changes related to CGC acquisition— 2,222,000 2,222,000 
Changes related to Solacom Technologies Inc. ("Solacom")1,052,000 — 1,052,000 
UHP acquisition13,905,000 — 13,905,000 
Balance as of July 31, 2021$270,389,000 77,309,000 $347,698,000