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INCOME TAXES (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Current tax provision |  |  |
Federal |  |  | $ 83,470
State | $ 7,877 | $ 8,177 | 7,502
Total current provision | 7,877 | 8,177 | 90,972
Deferred tax provision |  |  |
Total income tax provision | 7,877 | 8,177 | $ 90,972
Tax benefits attributable to carryback losses for federal tax purposes | 15,800,000 |  |
Deferred tax assets |  |  |
Net operating loss carryforwards | 5,979,717 | 4,704,612 |
Credit for alternative minimum tax paid | 201,773 | 201,773 |
Accrued expenses and reserves | 1,383,461 | 1,424,969 |
Employee stock option expense | 303,465 | 315,711 |
Non-employee stock option expense | 12,770 | 15,546 |
Inventory | 356,170 | 287,190 |
Litigation proceeds subject to stipulation |  | 2,929,640 |
Deferred tax assets | 8,237,356 | 9,879,441 |
Deferred tax liabilities |  |  |
Property and equipment | (485,384) | (493,985) |
Deferred tax liabilities | (485,384) | (493,985) |
Net deferred assets | 7,751,972 | 9,385,456 |
Valuation allowance | (7,751,972) | (9,385,456) |
Increase (decrease) in valuation allowance | $ (1,633,485) | $ 807,790 |
Reconciliation of income taxes based on the federal statutory rate and the effective income tax rate |  |  |
Income tax at the federal statutory rate (as a percent) | 35.00% | 35.00% | 35.00%
State tax, net of federal tax (as a percent) | 2.90% | 2.90% | 2.90%
Change in valuation allowance (as a percent) | (37.80%) | (34.30%) | (39.30%)
Permanent differences (as a percent) | 0.70% | (0.70%) | (0.30%)
Alternative minimum tax (as a percent) |  |  | (1.40%)
Other (as a percent) | (0.60%) | (3.20%) | 1.60%
Effective tax rate (as a percent) | 0.20% | (0.30%) | (1.50%)
Minimum |  |  |
Income tax examination |  |  |
State and local income tax returns, period subject to examination | 3 years |  |
Maximum |  |  |
Income tax examination |  |  |
State and local income tax returns, period subject to examination | 5 years |  |

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to 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 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 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=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e32123-109318 + Details
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