Segment Information Segment Profit (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Segment Profit
Segment profit	$ 45,991	$ 44,507	$ 135,612	$ 127,933
ID Solutions
Segment Profit
Segment profit	39,892	36,970	119,311	106,896
Workplace Safety
Segment Profit
Segment profit	$ 6,099	$ 7,537	$ 16,301	$ 21,037