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Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2011	Oct. 31, 2010
Consolidated Statements Of Operations [Abstract]
Net Sales	$ 25,962	$ 25,625	$ 52,283	$ 50,483
Costs of products sold	22,117	20,208	44,250	40,067
Gross profit	3,845	5,417	8,033	10,416
Operating expenses	4,005	4,045	7,960	7,946
Operating earnings (loss)	(160)	1,372	73	2,470
Other income (expense)	36	(1)	35	(1)
Interest expense	(128)	(77)	(223)	(122)
Earnings (loss) before income taxes	(252)	1,294	(115)	2,347
Income tax expense (benefit)	(96)	414	(67)	743
Net earnings (loss)	(156)	880	(48)	1,604
Less: net earnings (loss) attributable to the noncontrolling interest	(31)	25	55	92
Net earnings (loss) attributable to Kewaunee Scientific Corporation	$ (125)	$ 855	$ (103)	$ 1,512
Net earnings (loss) per share attributable to Kewaunee Scientific Corporation stockholders
Basic	$ (0.05)	$ 0.33	$ (0.04)	$ 0.59
Diluted	$ (0.05)	$ 0.33	$ (0.04)	$ 0.59
Weighted average number of common shares outstanding
Basic	2,579	2,573	2,579	2,573
Diluted	2,579	2,578	2,579	2,578

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