Unaudited Pro Forma Results of Acquisition as if Tocris Acquisition Had Occurred at the Beginning of Fiscal 2010 (Detail) (USD $) In Thousands, except Per Share data	12 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Reported
Net sales	$ 289,962	$ 269,047	$ 263,956
Net earnings	112,302	109,776	105,242
Net earnings per share:
Basic	$ 3.03	$ 2.95	$ 2.78
Diluted	$ 3.02	$ 2.94	$ 2.78
Pro forma (Unaudited)
Net sales	305,860	286,913
Net earnings	$ 118,641	$ 113,558
Net earnings per share:
Basic	$ 3.20	$ 3.05
Diluted	$ 3.19	$ 3.04

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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