Purchase of Noncontrolling Interest	12 Months Ended
Purchase of Noncontrolling Interest	Apr. 30, 2014
Noncontrolling Interest [Abstract]
Purchase of Noncontrolling Interest	Note 10—Purchase of Noncontrolling Interest On June 24, 2013, the Company entered into an Agreement (the “Agreement”) whereby it purchased the 49% minority ownership of its subsidiary, Kewaunee Labway Asia Pte. Ltd. (the “Subsidiary”) for a total purchase price of $3,555,000. The purchase was recorded in the consolidated balance sheet as a $1,874,000 reduction in retained earnings, a $1,681,000 reduction in noncontrolling interest, an increase of other current accrued expenses of $887,500, and an increase of other non-current liabilities of $887,500. On the date of the Agreement, the Company paid cash of $1,780,000 to the minority stockholder. The balance will be paid in two equal installments of $887,500 on the first two anniversary dates of the Agreement. The Subsidiary and its subsidiary in India, Kewanee Labway India Pvt. Ltd., serve as the Company’s principal sales and distribution organization for sales to international customers.

The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.

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