SUBSEQUENT EVENTS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Apr. 30, 2014
BHCMC, LLC and BHC Development, LC [Member]
Subsequent Event [Line Items]
Member equity interest (in hundredths)	20.00%
BHCMC, LLC and BHC Development, LC [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Period for recovery from sale of business unit	5 years
Beadle Enterprises, LLC [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Date of announcement	May 02, 2013
Receive from sale of business unit	$ 270
Aerospace segment [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Date of announcement	Jun. 27, 2013

Period for recovery from sale of business unit, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

+ Details

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Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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- Definition

Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Details

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- Definition

Date the event occurred after the balance sheet date but before financial statements are issues or available to be issued, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 855

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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