Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jul. 31, 2016		Jul. 31, 2015		Jul. 31, 2014
Net revenue:
Product	$ 502,752		$ 531,161		$ 509,527
Engineering	6,096		9,130		8,021
Total net revenue	508,848		540,291		517,548
Cost of sales:
Product	275,632		302,974		290,951
Engineering	5,151		7,830		6,894
Total cost of sales	280,783		310,804		297,845
Gross profit	228,065		229,487		219,703
Operating expenses:
Research and product development	67,119		68,462		73,828
Selling and marketing	65,266		63,489		59,157
General and administrative	60,826		57,291		54,147
Restructuring	9,641	[1],[2]	(354)	[1],[2]	3,483
Total operating expenses	202,852		188,888		190,615
Income from operations	25,213		40,599		29,088
Other income (expense):
Interest income, net	208		73		253
(Loss) on sale of other investments					(484)
Other (expense) income, net	(5,105)		361		181
Total other (expense) income, net	(4,897)		434		(50)
Income before income taxes	20,316		41,033		29,038
Provision for (benefit from) income taxes	8,189		7,552		(5,442)
Net income	$ 12,127		$ 33,481		$ 34,480
Net income per common share:
Basic	$ 0.98		$ 2.70		$ 2.78
Diluted	$ 0.96		$ 2.66		$ 2.72
Weighted average shares outstanding:
Basic	12,402		12,407		12,404
Diluted	12,615		12,606		12,667
Dividends declared and paid per share	$ 0.40		$ 0.40		$ 0.40

[1] Activity in fiscal year 2015 pertains to both the Fiscal Year 2014 Restructuring Plan and the 2013 Restructuring Plan. In fiscal year 2015, the restructuring adjustments of ($0.3) million and cash payments of ($2.4) million relate to the Fiscal Year 2014 Restructuring Plan, while restructuring adjustments of ($0.1) million and cash payments of ($0.5) million relate to the Fiscal Year 2013 Restructuring Plan.

[2] Activity in fiscal year 2016 pertains to the Fiscal Year 2016 Restructuring Plan, the Fiscal Year 2014 Restructuring Plan and the 2013 Restructuring Plan. In fiscal year 2016, there were restructuring charges of $9.6 million and cash payments of ($4.4) million related to the Fiscal Year 2016 Restructuring Plan, while there were cash payments of ($0.2) million and ($0.4) million related to the Fiscal Year 2014 Restructuring Plan and Fiscal Year 2013 Restructuring Plan, respectively.