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STOCKHOLDERS' EQUITY AND STOCK-BASED COMPENSATION (Details) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Apr. 12, 2018 | Mar. 09, 2018 | Jul. 10, 2017 | Jan. 09, 2019 | May 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Number of Options |  |  |  |  |  |  |  |
Outstanding at beginning of the period (in shares) |  |  |  |  |  | 1,003,836 |  |
Granted (in shares) |  | 60,390 | 50,000 | 298,914 | 7,050 |  |  |
Outstanding at the end of the period (in shares) |  |  |  |  |  | 997,989 | 1,003,836 |
Wtd Avg. Exercise Price |  |  |  |  |  |  |  |
Granted (in dollars per share) |  | $ 6.45 |  |  |  |  |  |
Exercised (in dollars per share) | $ 6.20 |  |  |  |  |  |  |
Wtd Avg. Remaining Term |  |  |  |  |  |  |  |
Granted Weighted Average Remaining Term |  |  |  |  |  | 2 years 7 months 20 days | 4 years 10 months 20 days |
Intrinsic Value of Options |  |  |  |  |  |  |  |
Forfeited, Intrinsic Value of Exercisable Options |  |  |  |  |  | $ 0 |  |
Employee Stock Option |  |  |  |  |  |  |  |
Number of Options |  |  |  |  |  |  |  |
Outstanding at beginning of the period (in shares) |  |  |  |  |  | 1,003,836 | 1,029,262 |
Granted (in shares) |  |  |  |  |  | 73,440 | 58,000 |
Exercised (shares) |  |  |  |  |  | (32,173) |  |
Forfeited/Expired |  |  |  |  |  | (47,114) | (83,426) |
Outstanding at the end of the period (in shares) |  |  |  |  |  | 997,989 | 1,003,836 | 1,029,262
Exercisable (in shares) |  |  |  |  |  | 925,545 | 891,087 | 603,655
Wtd Avg. Exercise Price |  |  |  |  |  |  |  |
Outstanding at beginning of the period (in dollars per share) |  |  |  |  |  | $ 4.69 | $ 5.00 |
Granted (in dollars per share) |  |  |  |  |  | 6.32 | 4.00 |
Exercised (in dollars per share) |  |  |  |  |  | 2.15 |  |
Forfeited/Expired |  |  |  |  |  | 9.31 | 8.50 |
Outstanding at end of the period (in dollars per share) |  |  |  |  |  | $ 4.67 | $ 4.69 | $ 5.00
Wtd Avg. Remaining Term |  |  |  |  |  |  |  |
Granted Weighted Average Remaining Term |  |  |  |  |  | 5 years | 5 years |
Outstanding, Wtd Average Remaining Term |  |  |  |  |  | 2 years 1 month 20 days | 2 years 7 months 20 days | 3 years 4 months 2 days
Intrinsic Value of Options |  |  |  |  |  |  |  |
Granted, Intrinsic Value of Exercisable Options |  |  |  |  |  | $ 0 | $ 0 |
Outstanding, Intrinsic Value (in dollars) |  |  |  |  |  | $ 4,705,220 | $ 1,356,188 | $ 1,161,244

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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