Income Taxes (Schedule of Unrecognized Tax Benefits Roll Forward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Income Tax Disclosure [Abstract]
Unrecognized tax benefits, beginning balance	$ 2,389	$ 1,399
Increases for positions taken in current year	52	1,457
Increases for positions taken in prior years	266	78
Decreases for positions taken in prior years	(1,360)	(216)
Reduction resulting from lapse of applicable statute of limitations	(206)	(329)
Unrecognized tax benefits, ending balance	$ 1,141	$ 2,389