Goodwill (Tables)

9 Months Ended

Apr. 30, 2020

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 during the nine months ended April 30, 2020:

	Commercial Solutions			Government Solutions	Total
Balance as of July 31, 2019	$	251,296,000		59,193,000	$	310,489,000
Change related to Solacom acquisition	(420,000		)	—	(420,000		)
Change related to GD NG-911 acquisition	4,556,000			—	4,556,000
Change related to CGC acquisition	—			20,852,000	20,852,000
Balance as of April 30, 2020	$	255,432,000		80,045,000	$	335,477,000