Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jul. 31, 2013	Jul. 31, 2012
Income Statement [Abstract]
Net Sales	$ 32,003	$ 26,683
Costs of products sold	25,427	21,440
Gross profit	6,576	5,243
Operating expenses	4,144	4,138
Operating earnings	2,432	1,105
Other income	80	68
Interest expense	(88)	(114)
Earnings before income taxes	2,424	1,059
Income tax expense	807	371
Net earnings	1,617	688
Less: net earnings attributable to the noncontrolling interest	30	54
Net earnings attributable to Kewaunee Scientific Corporation	$ 1,587	$ 634
Net earnings per share attributable to Kewaunee Scientific Corporation stockholders
Basic	$ 0.61	$ 0.25
Diluted	$ 0.61	$ 0.25
Weighted average number of common shares outstanding
Basic	2,596	2,581
Diluted	2,618	2,584