RELATED-PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2013
Director David Hayden [Member]
Related Party Transaction [Line Items]
Purchases from related party	$ 0	$ 0	$ 0
modifyPayments to Acquire Businesses, Gross	135	135	135
Director Bradley Hoffman [Member]
Related Party Transaction [Line Items]
Purchases from related party	4	50	47
Wayne Stewart [Member]
Related Party Transaction [Line Items]
Compensation expenses	219	204	209
Craig Stewart [Member]
Related Party Transaction [Line Items]
Compensation expenses	286	256	264
Jeff Shinkle [Member]
Related Party Transaction [Line Items]
Compensation expenses	179	171	$ 173
CEO [Member]
Related Party Transaction [Line Items]
Accrued Liabilities	$ 209	$ 119

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

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The aggregate costs related to delivering management services during the reporting period.

+ 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 210.5-03.2(d))

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

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