CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	May 31, 2020	Aug. 31, 2019
CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 433	$ 739
Property, plant and equipment, accumulated depreciation (in dollars)	52,035	49,730
Intangible assets, accumulated amortization (in dollars)	$ 74,715	$ 65,862
First Serial Preferred Stock, par value (in dollars per share)	$ 1.00	$ 1.00
First Serial Preferred Stock, Authorized shares	100,000	100,000
First Serial Preferred Stock, issued shares	0	0
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, Authorized shares	20,000,000	20,000,000
Common stock, shares issued	9,442,398	9,400,748
Common stock, shares outstanding	9,442,398	9,400,748