Amount of liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Represents the purchase by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest.

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Purchase of Noncontrolling Interest - Additional Information (Detail) (USD $)	9 Months Ended		9 Months Ended	0 Months Ended		0 Months Ended
	Jan. 31, 2014	Apr. 30, 2013	Jan. 31, 2014 Retained Earnings [Member]	Jun. 24, 2013 Kewaunee Scientific Corporation India Pvt. Ltd. [Member]	Jan. 31, 2014 Kewaunee Scientific Corporation India Pvt. Ltd. [Member]	Jun. 24, 2013 Kewaunee Scientific Corporation India Pvt. Ltd. [Member] Retained Earnings [Member]	Jun. 24, 2013 Kewaunee Scientific Corporation India Pvt. Ltd. [Member] Noncontrolling Interest [Member]
Noncontrolling Interest [Line Items]
Minority owner ship percentage				49.00%
Total purchase price of minority ownership				$ 3,555,000
Total purchase price of minority ownership	1,874,000		1,874,000			1,874,000
Total purchase price of minority ownership							1,681,000
Cash paid to minority stock holders	1,780,000			1,780,000
Other accrued expenses	2,644,000	1,948,000			887,500
Other non current liabilities recorded					$ 887,500