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INCENTIVE PLANS (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | May 31, 2017 | Nov. 30, 2010 | May 03, 2005
Stock Options |  |  |  |  |
Incentive plans |  |  |  |  |
Compensation expense | $ 43,200 | $ 994 |  |  |
Unrecognized compensation related to unvested awards | $ 164,160 |  |  |  |
Unrecognized compensation, vesting period | 2 years 4 months 13 days |  |  |  |
Options |  |  |  |  |
Balance at the beginning of the period(in shares) | 37,750 |  |  |  |
Granted (in shares) | 150,000 |  |  |  |
Balance at the end of the period (in shares) | 187,750 | 37,750 |  |  |
Exercisable at the end of the period (in shares) | 37,750 |  |  |  |
Weighted-Average Exercise Price Per Share |  |  |  |  |
Outstanding at the beginning of the period (in dollars per share) | $ 4.75 |  |  |  |
Granted (in dollars per share) | 3.43 |  |  |  |
Outstanding at the end of the period (in dollars per share) | 3.70 | $ 4.75 |  |  |
Exercisable at the end of the period (in dollars per share) | $ 4.75 |  |  |  |
Weighted-Average Remaining Contractual Term |  |  |  |  |
Outstanding at the end of the period | 8 years 1 month 17 days |  |  |  |
Exercisable at the end of the period | 3 years 2 months 12 days |  |  |  |
Aggregate Intrinsic Value |  |  |  |  |
Outstanding at the end of the period | $ 74,070 |  |  |  |
Exercisable at the end of the period | 9,570 |  |  |  |
Additional disclosures |  |  |  |  |
Intrinsic value of options exercised | $ 0 | $ 964 |  |  |
Cash received from options exercised |  | $ 4,822 |  |  |
Stock Options | Minimum |  |  |  |  |
Incentive plans |  |  |  |  |
Exercisable period | 1 year |  |  |  |
Stock Options | Maximum |  |  |  |  |
Incentive plans |  |  |  |  |
Expiration term | 10 years |  |  |  |
2003 Plan | Stock Options |  |  |  |  |
Incentive plans |  |  |  |  |
Number of shares eliminated |  |  |  |  | 172,500
2005 Plan | Stock Options |  |  |  |  |
Incentive plans |  |  |  |  |
Shares available for grant | 0 |  |  |  | 200,000
Options |  |  |  |  |
Granted (in shares) |  | 0 |  |  |
2005 Plan | Stock Options | Minimum |  |  |  |  |
Incentive plans |  |  |  |  |
Purchase price as a percentage of market value | 100.00% |  |  |  |
2010 Plan | Equity Appreciation Rights Plan |  |  |  |  |
Incentive plans |  |  |  |  |
Compensation (income) expense | $ (22,000) | $ 37,000 |  |  |
Equity Appreciation Rights Plan |  |  |  |  |
Vesting period from the base date | 3 years |  |  |  |
Shares granted (in units) | 100,000 | 31,666 |  |  |
Accrued compensation included in other accrued liabilities |  | $ 23,000 |  |  |
Accrued compensation included in other long-term liabilities |  | 22,000 |  |  |
Accrued compensation liability |  |  |  |  |
Beginning Balance | $ 45,000 | 143,000 |  |  |
Reductions | (22,000) | (36,000) |  |  |
Payments | $ (23,000) | (62,000) |  |  |
Ending Balance |  | 45,000 |  |  |
Accrued compensation liability |  |  |  |  |
Compensation liability included in other accrued liabilities |  | 23,000 |  |  |
Accrued compensation included in other long-term liabilities |  | $ 22,000 |  |  |
2010 Plan | Equity Appreciation Rights Plan | Maximum |  |  |  |  |
Incentive plans |  |  |  |  |
Number of common shares authorized |  |  |  | 1,000,000 |
Equity Appreciation Rights Plan |  |  |  |  |
Redemption cash payment period | 90 days |  |  |  |
2017 Plan | Stock Options |  |  |  |  |
Incentive plans |  |  |  |  |
Number of common shares authorized |  |  | 350,000 |  |
Options |  |  |  |  |
Granted (in shares) | 150,000 |  |  |  |

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