Segment Information Segment Profit (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Segment Profit
Segment profit	$ 40,780	$ 45,991	$ 134,490	$ 135,612
Asset Impairment Charges	(13,821)	0	(13,821)	0
ID Solutions
Segment Profit
Segment profit	36,401	39,892	119,499	119,311
Asset Impairment Charges	(2,792)
Workplace Safety
Segment Profit
Segment profit	4,379	$ 6,099	$ 14,991	$ 16,301
Asset Impairment Charges	$ (11,029)