Components of Accumulated Other Comprehensive Loss, Net of Tax (Detail) $ in Thousands	12 Months Ended
	Aug. 31, 2017 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 874,311
Other comprehensive loss before reclassifications	16,745
Amounts reclassified from accumulated other comprehensive loss	3,729
Ending balance	1,018,130
Unrealized (Gain) Loss on Derivative Financial Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(5,492)
Other comprehensive loss before reclassifications	1,944
Amounts reclassified from accumulated other comprehensive loss	3,729
Ending balance	181
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(20,832)	[1]
Other comprehensive loss before reclassifications	15,466	[1]
Ending balance	(5,366)	[1]
Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(429)
Other comprehensive loss before reclassifications	(665)
Ending balance	(1,094)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(26,753)
Ending balance	$ (6,279)

[1] Primarily relates to the foreign currency translation of the Company's Leu functional currency operations in Romania and the Zloty functional currency operations in Poland to U.S. Dollars.