Income Taxes (Schedule of Unrecognized Tax Benefits Roll Forward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2019	Aug. 31, 2018
Income Tax Disclosure [Abstract]
Unrecognized tax benefits, beginning balance	$ 1,399	$ 1,498
Increases for positions taken in current year	1,457	117
Increases for positions taken in prior years	78	43
Decreases for positions taken in prior years	(216)	(21)
Reduction resulting from lapse of applicable statute of limitations	(329)	(38)
Decreases for settlements with tax authorities		(200)
Unrecognized tax benefits, ending balance	$ 2,389	$ 1,399