Accumulated Other Comprehensive Loss (Roll Forward of Balances in Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2019	Aug. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ (18,088)	$ (12,108)
Current period change	(1,759)	(5,980)
Balance	(19,847)	(18,088)
Defined Benefit Pension Plan Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(2,199)	(2,450)
Current period change	(717)	251
Balance	(2,916)	(2,199)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(15,889)	(9,658)
Current period change	(1,042)	(6,231)
Balance	$ (16,931)	$ (15,889)