CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2020
Revenue
Revenue	$ 325,660	$ 293,336	$ 261,162
Costs and Expenses
Cost of products and services sold	202,708	174,660	161,615
Selling, general and administrative expenses	54,438	52,100	49,364
Research and product development costs	4,415	4,056	4,007
Operations optimization costs (Note 20)	842	977	807
Acquisition-related costs (Note 14)	4,000	128	274
Gain on sale of real estate (Note 19)			(2,551)
Write-down of certain assets under construction (Note 20)		100	405
Loss on impairment of goodwill (Note 4)	0
Loss on contingent consideration (Note 14)	432	1,664
Operating income	58,825	59,651	47,241
Interest expense	(425)	(297)	(246)
Other income (expense)	198	(760)	(1,675)
Income before income taxes	58,598	58,594	45,320
Income taxes (Note 7)	13,927	13,674	11,163
Net income	$ 44,671	$ 44,920	$ 34,157
Net income available to common shareholders, per common and common equivalent share (Note 17)
Basic	$ 4.72	$ 4.75	$ 3.62
Diluted	$ 4.70	$ 4.73	$ 3.59
Weighted average shares outstanding
Basic	9,399,085	9,383,085	9,359,940
Diluted	9,434,341	9,428,416	9,439,750
Annual cash dividends declared per share	$ 1.00	$ 0.80	$ 0.80
Sales
Revenue
Revenue	$ 322,462	$ 289,802	$ 257,742
Royalties and commissions
Revenue
Revenue	$ 3,198	$ 3,534	$ 3,420