CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Revenue
Revenue	$ 88,619	$ 79,593	$ 237,582	$ 215,216
Costs and Expenses
Cost of products and services sold	54,438	46,312	148,630	126,832
Selling, general and administrative expenses	13,807	13,969	40,307	38,560
Research and product development costs	1,186	957	3,274	3,034
Operations optimization costs (Note 15)	59	22	707	120
Acquisition-related costs (Note 17)				128
(Gain) loss on contingent consideration (Note 17)	(474)	262	(199)	995
Operating income	19,603	18,071	44,863	45,547
Interest expense	(89)	(68)	(262)	(204)
Other income (expense)	(166)	(260)	231	(758)
Income before income taxes	19,348	17,743	44,832	44,585
Income taxes (Note 14)	3,803	3,454	10,434	10,288
Net income	$ 15,545	$ 14,289	$ 34,398	$ 34,297
Net income available to common shareholders, per common and common equivalent share (Note 4)
Basic	$ 1.64	$ 1.51	$ 3.64	$ 3.63
Diluted	$ 1.64	$ 1.50	$ 3.62	$ 3.61
Weighted average shares outstanding
Basic	9,399,231	9,386,814	9,398,778	9,381,433
Diluted	9,431,259	9,435,335	9,435,369	9,426,879
Annual cash dividends declared per share			$ 1.00	$ 0.80
Sales
Revenue
Revenue	$ 87,724	$ 78,822	$ 235,098	$ 212,533
Royalties and commissions
Revenue
Revenue	$ 895	$ 771	$ 2,484	$ 2,683