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Note 13 - Income Taxes | 12 Months Ended
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Nov. 30, 2012
Income Tax Disclosure [Text Block] | (13) Income Taxes Total income tax expense (benefit) for the years ended November 30, 2012 and 2011 consists of the following:
| November 30 |
|  | 2012 |  | 2011 |
Current expense |  | $ | 1,364,661 |  |  | $ | 201,632 |
Deferred expense (credit) |  |  | (41,721 | ) |  |  | 130,407 |
|  | $ | 1,322,940 |  |  | $ | 332,039 |
The reconciliation of the statutory Federal income tax rate is as follows:
|  | November 30 |
|  | 2012 |  |  | 2011 |
Statutory federal income tax rate |  |  | 34.0% |  |  |  | 34.0% |
R & D tax credits |  |  | (2.0) |  |  |  | (4.8) |
PriorYear adjustments |  |  | (1.0) |  |  |  | (6.2) |
Other |  |  | 2.2 |  |  |  | (2.0) |
|  |  | 33.2% |  |  |  | 21.0% | %
Tax effects of temporary differences that give rise to significant portions of the deferred tax assets (liabilities) at November 30, 2012 and 2011 are presented below:
|  | November 30 |
|  | 2012 |  |  | 2011 |
Current deferred tax assets (liabilities): |  |  |  |  |  |
Accrued expenses |  | $ | 254,000 |  |  | $ | 55,000 |
Inventory capitalization |  |  | 8,000 |  |  |  | 52,000 |
Asset reserves |  |  | 800,000 |  |  |  | 826,000 |
Total current deferred tax assets |  | $ | 1,062,000 |  |  | $ | 933,000 |
Non-current deferred tax assets (liabilities): |  |  |  |  |  |  |  |
Property, plant, and equipment |  | $ | (897,000 | ) |  | $ | (811,000 | )
Total non-current deferred tax assets (liabilities) |  | $ | (897,000 | ) |  | $ | (811,000 | )
In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 136, 172 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43, 44, 45, 46, 47, 48, 49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: 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=6907707&loc=d3e32537-109319 Reference 7: 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=6907707&loc=d3e32639-109319 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 + Details
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