Segment Information Net Sales by Segment and Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Net Sales by Segment and Geographic Area
Net sales	$ 265,943	$ 289,745	$ 829,555	$ 865,367
Americas
Net Sales by Segment and Geographic Area
Net sales	152,625	169,335	487,835	502,532
Europe
Net Sales by Segment and Geographic Area
Net sales	78,750	87,356	240,478	258,910
Asia-Pacific
Net Sales by Segment and Geographic Area
Net sales	34,568	33,054	101,242	103,925
ID Solutions
Net Sales by Segment and Geographic Area
Net sales	193,169	213,979	613,518	641,283
ID Solutions | Americas
Net Sales by Segment and Geographic Area
Net sales	131,169	143,557	418,440	427,671
ID Solutions | Europe
Net Sales by Segment and Geographic Area
Net sales	41,183	48,984	129,884	145,094
ID Solutions | Asia-Pacific
Net Sales by Segment and Geographic Area
Net sales	20,817	21,438	65,194	68,518
Workplace Safety
Net Sales by Segment and Geographic Area
Net sales	72,774	75,766	216,037	224,084
Workplace Safety | Americas
Net Sales by Segment and Geographic Area
Net sales	21,456	25,778	69,395	74,861
Workplace Safety | Europe
Net Sales by Segment and Geographic Area
Net sales	37,567	38,372	110,594	113,816
Workplace Safety | Asia-Pacific
Net Sales by Segment and Geographic Area
Net sales	$ 13,751	$ 11,616	$ 36,048	$ 35,407