CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018
Revenue
Revenue	$ 261,162	$ 281,351	$ 284,188
Costs and Expenses
Cost of products and services sold	161,615	180,163	175,136
Selling, general and administrative expenses	49,364	48,707	47,703
Research and product development costs	4,007	4,021	3,940
Operations optimization costs (Note 20)	807	986	1,272
Acquisition-related costs (Note 14)	274		393
Gain on sale of real estate (Note 19)	(2,551)
Write-down of certain assets under construction (Note 20)	405
Loss on impairment of goodwill (Note 4)		2,410
Operating income	47,241	45,064	55,744
Interest expense	(246)	(519)	(1,172)
Gain on sale of license (Note 15)			1,085
Gain on sale of businesses (Note 18)			1,480
Other income (expense)	(1,675)	(992)	(172)
Income before income taxes	45,320	43,553	56,965
Income taxes (Note 7)	11,163	10,842	13,822
Net income	$ 34,157	$ 32,711	$ 43,143
Net income available to common shareholders, per common and common equivalent share (Note 17)
Basic	$ 3.62	$ 3.48	$ 4.60
Diluted	$ 3.59	$ 3.46	$ 4.56
Weighted average shares outstanding
Basic	9,359,940	9,334,232	9,296,648
Diluted	9,439,750	9,379,207	9,366,071
Cash dividends paid per share (in dollars per share)	$ 0.80	$ 0.80	$ 0.80
Annual cash dividends declared per share	$ 0.80	$ 0.80	$ 0.80
Product
Revenue
Revenue	$ 257,742	$ 276,839	$ 278,962
Royalties and commissions
Revenue
Revenue	$ 3,420	$ 4,512	$ 5,226