Consolidated Balance Sheets - Unaudited (Parentheticals) - USD ($) $ in Thousands	Feb. 29, 2020	Aug. 31, 2019
Statement of Financial Position [Abstract]
Accounts receivable, net of reserve	$ 7,939	$ 10,511
Preferred stock, par value (in USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	40,452,351	40,104,192
Common stock, shares outstanding (in shares)	37,849,247	38,117,840
Treasury stock, shares	(2,603,104)	(1,986,352)

Amount of allowance for credit loss on accounts receivable, classified as current.

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