Goodwill and Other Intangible Assets Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 410,987	$ 419,815
Goodwill, Foreign Currency Translation Gain (Loss)	5,047	8,828
Goodwill, Ending Balance	416,034	410,987
Identification Solutions
Goodwill [Roll Forward]
Goodwill, Beginning Balance	379,005	385,524
Goodwill, Foreign Currency Translation Gain (Loss)	3,342	6,519
Goodwill, Ending Balance	382,347	379,005
Workplace Safety
Goodwill [Roll Forward]
Goodwill, Beginning Balance	31,982	34,291
Goodwill, Foreign Currency Translation Gain (Loss)	1,705	2,309
Goodwill, Ending Balance	$ 33,687	$ 31,982