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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Weighted average price of options that were either forfeited or expired.

+ References

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

+ References

No definition available.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

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- Definition

Number of share options (or share units) exercised during the current period.

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SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity - $ / shares	12 Months Ended
	May 31, 2016	May 31, 2015
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options granted, number of options (in Shares)	345,000
Options exercised, number of options (in Shares)	(269,625)	(23,000)
Price Range Per Share $0.38 - $0.84 [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options outstanding at May 31, 2014 (in Shares)		860,500
Options outstanding at May 31, 2014		$ 0.51
Options exercised, number of options (in Shares)	(269,625)
Options exercised, price per share	$ 0.41
Price Range Per Share $0.38 - $0.84 [Member] \| Minimum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options outstanding at May 31, 2014		0.38
Options exercised, price per share	0.38
Price Range Per Share $0.38 - $0.84 [Member] \| Maximum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options outstanding at May 31, 2014		$ 0.84
Options exercised, price per share	$ 0.84
Price Range Per Share $0.82 - $0.85 [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options granted, number of options (in Shares)		356,000
Options granted, price per share		$ 0.82
Price Range Per Share $0.82 - $0.85 [Member] \| Minimum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options granted, price per share		0.82
Price Range Per Share $0.82 - $0.85 [Member] \| Maximum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options granted, price per share		$ 0.85
Price Range Per Share $0.38 - $0.71 [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options exercised, number of options (in Shares)		(23,000)
Options exercised, price per share		$ 0.42
Price Range Per Share $0.38 - $0.71 [Member] \| Minimum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options exercised, price per share		0.38
Price Range Per Share $0.38 - $0.71 [Member] \| Maximum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options exercised, price per share		$ 0.71
Price Range Per Share $0.43 - $0.85 [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options canceled or expired, number of options (in Shares)		(45,500)
Options canceled or expired, price per share		$ 0.72
Price Range Per Share $0.43 - $0.85 [Member] \| Minimum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options canceled or expired, price per share		0.43
Price Range Per Share $0.43 - $0.85 [Member] \| Maximum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options canceled or expired, price per share		$ 0.85
Price Range Per Share $0.38 - $0.85 [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options outstanding at May 31, 2014 (in Shares)	1,148,000
Options outstanding at May 31, 2014	$ 0.60
Options outstanding at May 31 (in Shares)		1,148,000
Options outstanding at May 31		$ 0.60
Price Range Per Share $0.38 - $0.85 [Member] \| Minimum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options outstanding at May 31, 2014	0.38
Options outstanding at May 31		0.38
Price Range Per Share $0.38 - $0.85 [Member] \| Maximum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options outstanding at May 31, 2014	$ 0.85
Options outstanding at May 31		$ 0.85
Price Range Per Share $1.04 - $1.20 [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options granted, number of options (in Shares)	345,000
Options granted, price per share	$ 1.17
Price Range Per Share $1.04 - $1.20 [Member] \| Minimum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options granted, price per share	1.04
Price Range Per Share $1.04 - $1.20 [Member] \| Maximum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options granted, price per share	$ 1.20
Price Range Per Share $0.43 - $1.04 [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options canceled or expired, number of options (in Shares)	(24,375)
Options canceled or expired, price per share	$ 0.74
Price Range Per Share $0.43 - $1.04 [Member] \| Minimum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options canceled or expired, price per share	0.43
Price Range Per Share $0.43 - $1.04 [Member] \| Maximum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options canceled or expired, price per share	$ 1.04
Price Range Per Share $0.43 - $1.20 [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options outstanding at May 31 (in Shares)	1,199,000
Options outstanding at May 31	$ 0.81
Price Range Per Share $0.43 - $1.20 [Member] \| Minimum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options outstanding at May 31	0.43
Price Range Per Share $0.43 - $1.20 [Member] \| Maximum [Member]
SHAREHOLDERS' EQUITY (Details) - Outstanding Stock Options Activity [Line Items]
Options outstanding at May 31	$ 1.20