Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 31, 2017	Oct. 31, 2016
Net revenue:
Product	$ 105,752	$ 120,245
Engineering	1,123	873
Total net revenue	106,875	121,118
Cost of sales:
Product	57,972	68,759
Engineering	1,136	723
Total cost of sales	59,108	69,482
Gross profit	47,767	51,636
Operating expenses:
Research and product development	15,012	15,850
Selling and marketing	12,405	18,180
General and administrative	11,941	13,621
Restructuring	535	32
Total operating expenses	39,893	47,683
Income from operations	7,874	3,953
Other income (expense), net	238	(442)
Income before income taxes	8,112	3,511
Provision for income taxes	2,453	980
Net income	$ 5,659	$ 2,531
Net income per common share:
Basic	$ 0.45	$ 0.20
Diluted	$ 0.45	$ 0.20
Weighted average shares outstanding:
Basic	12,473	12,419
Diluted	12,599	12,616
Dividends declared and paid per share	$ 0.10	$ 0.10