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INCOME TAXES (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Current tax provision (benefit) |  |  |  |  |  |  |
Federal |  |  |  |  |  | $ (13,318) |
State |  |  |  |  | $ 7,875 |  | $ 848
Total current provision (benefit) |  |  |  |  | 7,875 | (13,318) | 848
Deferred tax provision (benefit) |  |  |  |  |  |  |
Federal |  |  |  |  |  |  | (188,456)
Total deferred tax provision (benefit) |  |  |  |  |  |  | (188,456)
Total income tax provision (benefit) | $ 1,000 | $ 4,000 | $ 3,000 | $ (13,000) | 7,875 | (13,318) | (187,608)
Tax benefits attributable to net operating losses for federal tax purposes |  |  |  |  | 23,300,000 | 1,800,000 | $ 21,500,000
Deferred tax assets |  |  |  |  |  |  |
Net operating loss carry forwards | 5,748,724 |  |  | 6,668,238 | 5,748,724 | 6,668,238 |
Accrued expenses and reserves | 573,382 |  |  | 436,627 | 573,382 | 436,627 |
Employee stock option expense | 75,591 |  |  | 76,150 | 75,591 | 76,150 |
Nonemployee stock option expense | 8,207 |  |  | 8,268 | 8,207 | 8,268 |
Inventory | 110,455 |  |  | 132,114 | 110,455 | 132,114 |
Impairment | 111,178 |  |  |  | 111,178 |  |
Unrealized Gain/Loss | 30,434 |  |  | 112,000 | 30,434 | 112,000 |
Deferred tax assets | 6,657,971 |  |  | 7,433,397 | 6,657,971 | 7,433,397 |
Deferred tax liabilities |  |  |  |  |  |  |
Property and equipment | (1,628,133) |  |  | (1,281,999) | (1,628,133) | (1,281,999) |
Deferred tax liabilities | (1,628,133) |  |  | (1,281,999) | (1,628,133) | (1,281,999) |
Net deferred assets | 5,029,838 |  |  | 6,151,398 | 5,029,838 | 6,151,398 |
Valuation allowance | $ (5,029,838) |  |  | $ (6,151,398) | (5,029,838) | (6,151,398) |
Increase (decrease) in valuation allowance |  |  |  |  | $ (1,121,560) | $ 325,444 |
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) |  |  |  |  | 21.00% | 21.00% | 35.00%
State tax, net of federal tax (as a percent) |  |  |  |  | 2.00% | 3.50% | 2.90%
Change in valuation allowance (as a percent) |  |  |  |  | (35.60%) | (24.30%) | 85.90%
Permanent differences (as a percent) |  |  |  |  |  | (0.30%) | 5.70%
Return-to-provision and other (as a percent) |  |  |  |  | 12.90% |  | (37.60%)
Tax Reform and Jobs Act tax rate change |  |  |  |  |  | 0.10% | (81.10%)
Incentive stock options (as a percent) |  |  |  |  |  |  | (6.00%)
Effective tax rate (as a percent) |  |  |  |  | 0.30% |  | 4.80%
Minimum |  |  |  |  |  |  |
Reconciliation of income taxes based on the federal statutory rate and the effective income tax rate |  |  |  |  |  |  |
State and local income tax returns, period subject to examination |  |  |  |  | 3 years |  |
Maximum |  |  |  |  |  |  |
Reconciliation of income taxes based on the federal statutory rate and the effective income tax rate |  |  |  |  |  |  |
State and local income tax returns, period subject to examination |  |  |  |  | 5 years |  |

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