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STOCK OPTIONS - SUMMARY OF NONVESTED STOCK OPTIONS (Details) - $ / shares | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward] |  |
Number of Options Non-vested at beginning of period (in shares) | 1,707,411 |
Number of Options Non-vested, Granted (in shares) | 810,762 | 830,922
Number of Options Non-vested, Vested (in shares) | (618,917) |
Number of Options Non-vested, Forfeited (in shares) | (153,750) |
Number of Options Non-vested at end of period (in shares) | 1,745,506 | 1,707,411
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] |  |
Weighted average grant date fair value, Non-vested Options at beginning of period (in dollars per share) | $ 2.63 |
Weighted average grant date fair value, Non-vested Options, Granted (in dollars per share) | 0.89 |
Weighted average grant date fair value, Non-vested Options, Vested (in dollars per share) | 1.08 |
Weighted average grant date fair value, Non-vested Options, Forfeited (in dollars per share) | 1.75 |
Weighted average grant date fair value, Non-vested Options at end of period (in dollars per share) | $ 1.25 | $ 2.63

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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
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