Derivatives And Risk Management (Effective Portion of Derivatives Designated as Cash Flow Hedging Instruments Reclassified from Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2013	May 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss), net of taxes, for cash flow hedges reclassified from AOCI	$ 44	$ 29	$ 440	$ (1,107)
Commodity [Member] | Cost of goods sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss), net of taxes, for cash flow hedges reclassified from AOCI	(62)	3	(56)	18
Foreign exchange [Member] | Net sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss), net of taxes, for cash flow hedges reclassified from AOCI	80	40	141	(1,153)
Foreign exchange [Member] | Cost of goods sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss), net of taxes, for cash flow hedges reclassified from AOCI	(37)	0	13	0
Foreign exchange [Member] | SG&A expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss), net of taxes, for cash flow hedges reclassified from AOCI	(47)	(116)	29	(277)
Interest rate [Member] | Interest expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss), net of taxes, for cash flow hedges reclassified from AOCI	$ 110	$ 102	$ 313	$ 305