SEGMENT INFORMATION (GEOGRAPHY) (Details)	12 Months Ended
Apr. 30, 2015 USD ($) item	Apr. 30, 2014 USD ($) item
Revenue from External Customer
Net sales	$ 13,562,000	$ 13,100,000
Number of customers for given percentage annual sales volume \| item	26
Annual sales volume percentage	90.00%
Number of major customers for given percentage consolidated net sales \| item	1	1
Consolidated net sales percentage	41.00%	44.00%
Domestic
Revenue from External Customer
Net sales	$ 12,341,000	$ 12,183,000
Foreign
Revenue from External Customer
Net sales	$ 1,221,000	$ 917,000

Represents the percentage of annual sales volume.

No definition available.

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- Definition

Represents the percentage of consolidated net sales.

+ References

No definition available.

+ Details

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- Definition

Represents number of customers for a given percentage of annual sales volume.

+ References

No definition available.

+ Details

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- Definition

Represents number of major customers for a given percentage of consolidated net sales.

+ References

No definition available.

+ Details

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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

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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- Details

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