SHAREHOLDERS' EQUITY (Details) - Company's stock options outstanding (USD $)	12 Months Ended
May 31, 2014
Range Of Exercise Price $0.30 - $0.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
NUMBER OUTSTANDING	602,500
WEIGHTED AVERAGE REMAINING CONTRACTUAL LIFE IN YEARS	2 years 109 days
OPTION OUTSTSANDING, WEIGHTED AVERAGE EXERCISE PRICE	$ 0.41
NUMBER EXERCISABLE	371,500
OPTION EXERCISABLE, WEIGHTED AVERAGE EXERCISE PRICE	$ 0.41
Range Of Exercise Price $0.51 - $0.75 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
NUMBER OUTSTANDING	211,000
WEIGHTED AVERAGE REMAINING CONTRACTUAL LIFE IN YEARS	4 years 211 days
OPTION OUTSTSANDING, WEIGHTED AVERAGE EXERCISE PRICE	$ 0.72
NUMBER EXERCISABLE	77,500
OPTION EXERCISABLE, WEIGHTED AVERAGE EXERCISE PRICE	$ 0.75
Range Of Exercise Price $0.83 - $0.84 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
NUMBER OUTSTANDING	47,000
WEIGHTED AVERAGE REMAINING CONTRACTUAL LIFE IN YEARS	3 years 208 days
OPTION OUTSTSANDING, WEIGHTED AVERAGE EXERCISE PRICE	$ 0.84
NUMBER EXERCISABLE
OPTION EXERCISABLE, WEIGHTED AVERAGE EXERCISE PRICE

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Balance Type:	na
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- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Balance Type:	na
Period Type:	instant

- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Balance Type:	na
Period Type:	instant

- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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