CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2020	May 31, 2019	May 31, 2020	May 31, 2019
Revenue
Revenue	$ 64,871	$ 72,112	$ 197,255	$ 211,246
Costs and Expenses
Cost of products and services sold	39,689	46,406	122,138	136,194
Selling, general and administrative expenses	12,773	13,251	40,223	39,699
Operations optimization costs (Note 15)	268	193	977	453
Loss on impairment of goodwill (Note 7)				2,410
Operating income	12,141	12,262	33,917	32,490
Interest expense	(67)	(91)	(178)	(457)
Gain on sale of real estate (Note 14)	760		760
Other income (expense)	(307)	17	(1,096)	(1,105)
Income before income taxes	12,527	12,188	33,403	30,928
Income taxes (Note 17)	2,619	3,647	8,254	8,291
Net income	$ 9,908	$ 8,541	$ 25,149	$ 22,637
Net income available to common shareholders, per common and common equivalent share (Note 4)
Basic	$ 1.05	$ 0.91	$ 2.67	$ 2.41
Diluted	$ 1.04	$ 0.90	$ 2.64	$ 2.39
Weighted average shares outstanding
Basic	9,363,559	9,337,436	9,357,176	9,333,098
Diluted	9,429,263	9,378,910	9,435,897	9,377,748
Annual cash dividends declared per share			$ 0.80	$ 0.80
Product
Revenue
Revenue	$ 64,157	$ 70,883	$ 194,540	$ 207,689
Royalties and commissions
Revenue
Revenue	$ 714	$ 1,229	$ 2,715	$ 3,557