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STOCK-BASED COMPENSATION (Details Narrative) - USD ($) |  | 12 Months Ended
--- | --- | ---
Aug. 02, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Stock-based compensation |  | $ 688,000 | $ 524,000 | $ 468,000
Stock option exercise intrinsic value |  | 27,000 | 230,500 | 679,000
Reduction in income taxes payable from tax benefit upon exercise of stock options |  |  | 325,000 | $ 513,000
Options, Grants in Period, Weighted Average Grant Date Fair Value |  |  |  | $ 10.86
Options, fair values vested during year |  | 151,000 | 221,000 | $ 387,000
Common stock issued upon cashless exercise of options |  |  | 80,000 | 447,751
Allocated stock-based compensation |  | 688,000 | $ 524,000 | $ 468,000
Stock Grants [Member] |  |  |  |
Common stock issued as employee compensation (in shares) | 98,645 |  |  |
Stock Grants [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |
Stock-based compensation |  | 135,100 |  |
Allocated stock-based compensation |  | 135,100 |  |
Stock Grants [Member] | Cost of Sales [Member] |  |  |  |
Stock-based compensation |  | 28,400 |  |
Allocated stock-based compensation |  | $ 28,400 |  |
Restricted Stock Units [Member] | Board of Directors [Member] |  |  |  |
Common stock issued as employee compensation (in shares) |  | 53,882 |  |
Cashless Exercise [Member] |  |  |  |
Common stock issued upon cashless exercise of options |  | $ 168,750 |  |
Common stock issued upon cashless exercise of options (in shares) |  | 25,000 |  |
Number of shares received in cashless exercise |  | 21,552 |  |
Performance Equity Plan 2000 [Member] |  |  |  |
Number of Shares Authorized |  | 1,230,000 |  |
Exercisable Price for Options Granted to President and Specific Persons as Percentage of Closing Price |  | 110.00% |  |
Performance Equity Plan 2009 [Member] |  |  |  |
Number of Shares Authorized |  | 500,000 |  |
Exercisable Price for Options Granted to President and Specific Persons as Percentage of Closing Price |  | 110.00% |  |
Percentage of Voting Stock Considered for Higher Exercise Price |  | 10.00% |  |
Number of Shares Available for Grant |  | 128,481 |  |
Long Term Incentive Plan [Member] |  |  |  |
Number of Shares Authorized |  | 600,000 |  |
Number of Shares Available for Grant |  | 452,023 |  |
Maximum number of shares to be granted as incentive stock |  | 200,000 |  |

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