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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Nov. 30, 2013	Nov. 30, 2012
Income Statement [Abstract]
Net sales	$ 95,541	$ 95,264
Cost of products sold	45,868	47,537
Gross profit	49,673	47,727
Operating expenses:
Selling, general and administrative	26,699	25,329
Advertising and sales promotion	5,615	6,067
Amortization of definite-lived intangible assets	592	466
Total operating expenses	32,906	31,862
Income from operations	16,767	15,865
Other income (expense):
Interest income	131	62
Interest expense	(215)	(125)
Other income (expense), net	(214)	52
Income before income taxes	16,469	15,854
Provision for income taxes	4,987	4,910
Net income	$ 11,482	$ 10,944
Earnings per common share:
Basic	$ 0.75	$ 0.69
Diluted	$ 0.74	$ 0.69
Shares used in per share calculations:
Basic	15,279	15,693
Diluted	15,366	15,807
Dividends declared per common share	$ 0.31	$ 0.29

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