Payments of distributions to shareholders.

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4M
-URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591554-111686

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

The increase (decrease) during the reporting period in other expenses incurred but not yet paid.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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- Definition

The increase (decrease) during the reporting period in other noncurrent operating liabilities not separately disclosed in the statement of cash flows.

+ References

No definition available.

+ Details

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- Definition

Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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-Topic 810
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-Paragraph 23
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-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=51664549&loc=SL4616395-111683

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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- Details

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- Details

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Purchase of Noncontrolling Interest - Additional Information (Detail) - USD ($)		12 Months Ended
	Jun. 24, 2013	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2014
Noncontrolling Interest [Line Items]
Reduction in retained earnings				$ 1,874,000
Cash paid to minority stock holders		$ 888,000	$ 888,000	1,780,000
Retained Earnings [Member]
Noncontrolling Interest [Line Items]
Reduction in retained earnings				$ 1,874,000
Kewaunee Labway Asia Pte. Ltd. [Member]
Noncontrolling Interest [Line Items]
Minority ownership percentage	49.00%	100.00%
Total purchase price of minority ownership	$ 3,555,000
Cash paid to minority stock holders	1,780,000
Increase in other current accrued expenses	887,500
Increase in other non current liabilities	887,500
Kewaunee Labway Asia Pte. Ltd. [Member] \| Retained Earnings [Member]
Noncontrolling Interest [Line Items]
Reduction in retained earnings	1,874,000
Kewaunee Labway Asia Pte. Ltd. [Member] \| Noncontrolling Interest [Member]
Noncontrolling Interest [Line Items]
Reduction in noncontrolling interest	1,681,000
Kewaunee Labway Asia Pte. Ltd. [Member] \| Final Installment [Member]
Noncontrolling Interest [Line Items]
Remaining amount to be paid to Stockholders	887,500
Kewaunee Labway Asia Pte. Ltd. [Member] \| Second Installment [Member]
Noncontrolling Interest [Line Items]
Remaining amount to be paid to Stockholders	$ 887,500