Percentage of accounts receivable balance of major customers.

No definition available.

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- Definition

Number Of Major Customers

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No definition available.

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- Definition

Disclosure of the extent of entity's reliance on its major customers. For example, includes revenues from transactions with a single external customer amounting to 10 percent or more of the entity's revenues, the total amount of revenues from each such customer or group of customers.

+ References

No definition available.

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- Definition

Disclosure of the extent of entity's reliance on its national stocking distributor. For example, includes revenues from transactions with a single external customer amounting to 10 percent or more of the entity's revenues, the total amount of revenues from each such customer or group of customers.

+ References

No definition available.

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- Details

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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-Topic 720

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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-Publisher FASB

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-Topic 260

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-Subparagraph (c)

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-Glossary Antidilution

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-Glossary Diluted Earnings Per Share

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-Glossary Contingent Stock Agreement

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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-Subparagraph (b)

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-Section 45

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- Definition

The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations.

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-Subparagraph (SX 210.4-08.(b))

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- Definition

The net of assets and liabilities.

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-Topic 946

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-Subparagraph (SX 210.6-09.6,7)

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-Topic 946

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-Subparagraph (SX 210.6-05.4)

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-Number 210

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-Number 210

-Section 09

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- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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-Publisher FASB

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-Topic 210

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-02.17)

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-Name Regulation S-X (SX)

-Number 210

-Section 02

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-Article 5

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-Topic 210

-SubTopic 10

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-Subparagraph (d)

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- Definition

Amount billed to customers under long-term contracts or programs that have been withheld because of retainage provisions in a contract.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 910

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-Subparagraph (a)

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-Topic 210

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-Subparagraph (SX 210.5-02.3(c)(1))

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-Number 210

-Section 02

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-Subparagraph c(1)

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

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- Definition

Date the entity entered into the derivative contract, in CCYY-MM-DD format.

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No definition available.

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Date the derivative contract matures, in CCYY-MM-DD format.

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No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

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-Paragraph 3

-Subparagraph (a)(1)

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- Definition

Amount borrowed under the credit facility as of the balance sheet date.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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-Article 5

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- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

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-Topic 730

-SubTopic 10

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-Paragraph 1

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- Definition

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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-Publisher FASB

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-Topic 225

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-03.1)

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-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended					12 Months Ended		12 Months Ended		12 Months Ended
	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2014 Store	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2014 May 1, 2013 to August 1, 2017 [Member]	May 31, 2013 May 1, 2013 to August 1, 2017 [Member]	Apr. 30, 2014 August 1, 2017 to May 1, 2020 [Member]	May 31, 2013 August 1, 2017 to May 1, 2020 [Member]	Apr. 30, 2014 November 3, 2014 to May 1, 2020 [Member]	May 31, 2013 November 3, 2014 to May 1, 2020 [Member]	Apr. 30, 2014 Revenue [Member]	Apr. 30, 2013 Revenue [Member]	Apr. 30, 2012 Revenue [Member]	Apr. 30, 2014 Subsidiaries [Member]	Apr. 30, 2013 Subsidiaries [Member]	Apr. 30, 2012 Subsidiaries [Member]	Apr. 30, 2014 Kewaunee Labway Asia Pte. Ltd. [Member]	Apr. 30, 2014 Kewaunee Labway India Pvt. Ltd. [Member]	Apr. 30, 2014 Kewaunee Scientific Corporation India Pvt. Ltd. [Member]	Apr. 30, 2014 Kewaunee Scientific Corporation Singapore Pte. Ltd. [Member]	Apr. 30, 2014 Kewaunee Scientific Corporation China [Member]
Significant Accounting Policies [Line Items]
Percentage of controlling interest in subsidiaries																								100.00%	90.00%	100.00%	100.00%	100.00%
Net assets																					$ 8,864,000	$ 11,189,000
Net sales	27,052,000	26,013,000	26,098,000	32,003,000	31,803,000	27,450,000	31,185,000	26,683,000	111,166,000	117,121,000	102,847,000										19,416,000	23,602,000	18,876,000
Property plant and equipment impairment charges									0	0	0
Assets held in trust account for non-qualified benefit plans included in other assets	3,313,000				4,077,000				3,313,000	4,077,000
Cash surrender value of life insurance policies included in other assets	88,000				96,000				88,000	96,000
Retainage included in accounts receivable	2,490,000				2,659,000				2,490,000	2,659,000
Revenue percentage from national stocking distributor																		9.00%	11.00%	12.00%
Number of domestic dealers									2
Total Sales									24.00%	14.00%	2.00%
Total accounts receivable									22.00%	8.00%
Research and development costs									842,000	872,000	941,000
Advertising costs									377,000	395,000	344,000
Outstanding advances under the long-term debt													$ 3,450,000		$ 2,600,000		$ 1,218,000
Interest rate swap, conversion rate												4.875%		4.37%		3.07%
Interest rate swap, beginning date of conversion												May 01, 2013		Aug. 01, 2017		Nov. 03, 2014
Interest rate swap, ending date of conversion												Aug. 01, 2017		May 01, 2020		May 01, 2020
Antidilutive options exclude from computation of earning per share									0	72,850	253,050
Stock options granted									46,600	40,000	55,000