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INCOME TAXES (Tables)

12 Months Ended

May 31, 2017

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Years ended May 31,	2017			2016
Current:
U.S. Federal	$	--		$	--
State and local		--			(800)
Total current		--			(800)
Deferred:
U.S. Federal		--			(579,414)
State and local		--			(123,586)
Total deferred		--			(703,000)
Income tax (expense) benefit	$	--		$	(703,800)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Years ended May 31,	2017			2016
Computed "expected" tax benefit	$	317,997		$	274,479
Increase (reduction) in income taxes resulting from:
Change in valuation allowance		(397,000)			(1,038,000)
State income taxes, net of federal benefit		30,215			34,276
Research and development tax credits		40,205			21,844
Permanent tax differences and other		8,583			3,601
Income tax (expense)	$	--		$	(703,800)

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

As of May 31,	2017			2016
Deferred tax assets:
Accounts receivable, principally due to allowance for doubtful accounts and sales returns	$	19,000		$	3,000
Inventory valuation		14,000			11,000
Compensated absences and deferred payroll		62,000			60,000
Net operating loss carryforwards		968,000			705,000
Tax credit carryforwards		307,000			268,000
Deferred rent expense		6,000			3,000
Other		108,000			82,000
Total deferred tax assets		1,484,000			1,132,000
Less valuation allowance		(1,435,000)			(1,038,000)
Deferred tax asset Net		49,000			94,000
Deferred tax liabilities:
Accumulated depreciation of property and equipment		(8,000)			(53,000)
Net deferred tax asset	$	41,000		$	41,000

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- References

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- Definition

Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319

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- Definition

Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319

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- Definition

Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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