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INCOME TAXES (Detail) - Deferred Tax (USD $) | May 31, 2012 | May 31, 2011
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Deferred tax assets: |  |
Accounts receivable, principally due to allowance for doubtful accounts and sales returns | $ 46,000 | $ 13,000
Inventory valuation | 30,000 | 34,000
Compensated absences and deferred payroll | 70,000 | 50,000
Net operating loss carryforwards | 327,000 | 583,000
Tax credit carryforwards | 83,000 | 99,000
Deferred rent expense | 31,000 | 30,000
Other | 77,000 | 70,000
Total deferred tax assets | 664,000 | 879,000
Less valuation allowance | (280,000) | (511,000)
Deferred Tax Asset Net | 384,000 | 368,000
Deferred tax liabilities: |  |
Accumulated depreciation of property and equipment | (146,000) | (130,000)
Deferred Tax Asset Net | 238,000 | 238,000
Deferred tax assets, current portion | 177,000 | 127,000
Deferred tax assets, long-term portion | $ 61,000 | $ 111,000

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