STOCK OPTIONS - NARRATIVE (Details) - USD ($)
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12 Months Ended |
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Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Jul. 31, 2015 |
Jul. 31, 2012 |
Oct. 30, 2007 |
Dec. 31, 2001 |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Option expiration period (in years) |
10 years
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| Option vesting period (in years) |
7 years
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| Aggregate intrinsic value of all stock options outstanding and expected to vest |
$ 4,150,334
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$ 102,992
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| Aggregate intrinsic value of currently exercisable stock options |
$ 1,574,318
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$ 11,250
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| Closing stock price for computation of intrinsic value (in dollars per share) |
$ 3.59
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$ 2.10
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| Number of in-the-money options outstanding and exercisable |
1,211,014
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410,715
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| Intrinsic value of options exercised |
$ 119,026
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$ 51,575
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$ 229,135
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| Proceeds from stock options exercised |
12,300
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209,250
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87,475
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| Intrinsic value of options granted |
1,516,125
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932,771
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1,107,180
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| Fair value of option shares vested |
$ 612,464
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$ 412,638
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$ 637,000
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| Shares issued in stock swaps |
9,614
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33,520
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73,699
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| Value of stock swaps, net |
$ 12,300
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$ 80,475
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| Unrecognized stock-based compensation cost |
$ 1,200,000
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| Unrecognized stock-based compensation cost, recognition period (in years) |
4 years
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| Common Stock |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Shares received in stock swaps |
26,636
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80,980
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33,301
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| Stock Option |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Shares received in stock swaps |
36,250
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114,500
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107,000
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| 2001 Executive and Employee Stock Option Plan |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Shares authorized under common stock option plans |
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1,200,000
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| 2003 Executive and Employee Stock Option Plan |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Shares authorized under common stock option plans |
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1,700,000
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| 2012 Share Incentive Plan |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Shares authorized under common stock option plans |
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750,000
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| Remaining shares for issuance (in shares) |
37,000
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| 2015 Executive and Employee Stock Option Plan |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Shares authorized under common stock option plans |
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2,000,000
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| Remaining shares for issuance (in shares) |
693,078
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