Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Net sales
Product sales	$ 189,861	$ 170,073	$ 564,310	$ 500,878
Product service	27,407	22,040	78,758	63,777
Total net sales	217,268	192,113	643,068	564,655
Cost of sales
Product sales	93,762	84,681	283,005	250,052
Product service	18,832	15,984	53,495	45,171
Total cost of sales	112,594	100,665	336,500	295,223
Gross profit	104,674	91,448	306,568	269,432
Expenses:
Selling	33,252	30,509	95,774	85,312
General and administrative	37,784	29,204	102,068	87,672
Research and development	6,571	4,291	17,543	13,328
Total operating expenses	77,607	64,004	215,385	186,312
Income from operations	27,067	27,444	91,183	83,120
Interest expense, net	1,498	1,084	3,822	3,303
Other income	0	0	(1,138)	0
Income before income taxes	25,569	26,360	88,499	79,817
Income taxes	6,833	8,849	14,346	25,436
Net income	$ 18,736	$ 17,511	$ 74,153	$ 54,381
Earnings per common share:
Basic (in dollars per share)	$ 0.45	$ 0.42	$ 1.78	$ 1.30
Diluted (in dollars per share)	0.45	0.42	1.77	1.30
Dividends declared per common share (in dollars per share)	$ 0.00	$ 0.00	$ 0.09	$ 0.07