6. SHAREHOLDERS EQUITY (Details - Options outstanding and exercisable) - May. 31, 2015 - $ / shares	Total
Awards outstanding	788,100
Awards outstanding weighted average remaining contractual life	5 years 9 months 15 days
Awards outstanding weighted average exercise price	$ 4.76
Awards exercisable	364,500
Awards exercisable weighted average remaining contractual life	2 years 10 months 10 days
Awards exercisable weighted average exercise price	$ 2.61
$1.00 to $1.50 [Member]
Exercise price low	1.00
Exercise price high	$ 1.50
Awards outstanding	163,000
Awards outstanding weighted average remaining contractual life	3 years 7 days
Awards outstanding weighted average exercise price	$ 1.03
Awards exercisable	163,000
Awards exercisable weighted average remaining contractual life	3 years 2 months 16 days
Awards exercisable weighted average exercise price	$ 1.03
$1.51 to $3.00 [Member]
Exercise price low	1.51
Exercise price high	$ 3.00
Awards outstanding	8,600
Awards outstanding weighted average remaining contractual life	4 years 10 months 28 days
Awards outstanding weighted average exercise price	$ 2.37
Awards exercisable	8,600
Awards exercisable weighted average remaining contractual life	4 years 10 months 28 days
Awards exercisable weighted average exercise price	$ 2.37
$3.01 to $4.50 [Member]
Exercise price low	3.01
Exercise price high	$ 4.50
Awards outstanding	133,500
Awards outstanding weighted average remaining contractual life	2 years 1 month 10 days
Awards outstanding weighted average exercise price	$ 3.25
Awards exercisable	131,700
Awards exercisable weighted average remaining contractual life	2 years 14 days
Awards exercisable weighted average exercise price	$ 3.24
$4.51 to $6.00 [Member]
Exercise price low	4.51
Exercise price high	$ 6.00
Awards outstanding	128,000
Awards outstanding weighted average remaining contractual life	3 years 7 months 6 days
Awards outstanding weighted average exercise price	$ 5.47
Awards exercisable	57,200
Awards exercisable weighted average remaining contractual life	3 years 5 months 16 days
Awards exercisable weighted average exercise price	$ 5.42
$6.01 to $6.85 [Member]
Exercise price low	6.01
Exercise price high	$ 6.85
Awards outstanding	355,000
Awards outstanding weighted average remaining contractual life	9 years 2 months 1 day
Awards outstanding weighted average exercise price	$ 6.84
Awards exercisable	4,000
Awards exercisable weighted average remaining contractual life	2 years 3 months
Awards exercisable weighted average exercise price	$ 6.68

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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

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

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-Publisher FASB

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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

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

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