Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Net sales
Net sales	$ 236,933	$ 228,552	$ 782,677	$ 678,679
Cost of sales
Cost of sales	135,950	121,675	443,581	361,878
Gross profit	100,983	106,877	339,096	316,801
Expenses:
Selling	38,057	36,077	121,208	103,233
General and administrative	32,133	48,634	149,471	122,527
Research and development	8,349	7,354	23,953	22,355
Total operating expenses	78,539	92,065	294,632	248,115
Income from operations	22,444	14,812	44,464	68,686
Interest expense, net	10,113	2,509	26,082	6,742
Other income, net	0	0	0	(1,313)
Income before income taxes	12,331	12,303	18,382	63,257
Income taxes	(3,456)	4,128	(909)	17,040
Net income	$ 15,787	$ 8,175	$ 19,291	$ 46,217
Earnings per common share:
Basic (in dollars per share)	$ 0.37	$ 0.20	$ 0.46	$ 1.11
Diluted (in dollars per share)	0.37	0.20	0.46	1.11
Dividends per common share (in dollars per share)	$ 0	$ 0	$ 0.11	$ 0.10
Product sales
Net sales
Net sales	$ 207,690	$ 197,478	$ 690,303	$ 587,251
Cost of sales
Cost of sales	116,488	99,867	381,965	299,595
Product service
Net sales
Net sales	29,243	31,074	92,374	91,428
Cost of sales
Cost of sales	$ 19,462	$ 21,808	$ 61,616	$ 62,283