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		6 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2013	Feb. 29, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss), net of taxes, for cash flow hedges reclassified from AOCI	$ 274	$ (3)	$ 396	$ (1,136)
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	6	28	6	15
Foreign exchange [Member] | Net sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss), net of taxes, for cash flow hedges reclassified from AOCI	10	(36)	61	(1,193)
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	91	0	50	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	66	(97)	76	(161)
Interest rate [Member] | Interest expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss), net of taxes, for cash flow hedges reclassified from AOCI	$ 101	$ 102	$ 203	$ 203