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STOCK-BASED COMPENSATION (Details 1) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] |  |
Balance at beginning | 5,636,000 | 4,634,000
Granted | 1,190,000 | 1,327,000
Exercised | (2,007,000) | (40,000)
Forfeiture and cancelled | (217,000) | (285,000)
Balance at end | 4,602,000 | 5,636,000
Exercisable at end | 3,250,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] |  |
Balance at beginning | $ 1.04 | $ 0.81
Granted | 3.82 | 2.01
Exercised | 0.82 | 0.42
Forfeiture and cancelled | 1.77 | 1.81
Balance at end | 1.82 | 1.04
Exercisable at end | 1.09 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Fair Value [Roll Forward] |  |
Balance at beginning | $ 0.41 | 0.41
Granted |  | 0.33
Forfeiture and cancelled |  | 0.38
Balance at end |  | $ 0.41
Share-based Compensation Arrangement by Share-based Payment Award, Options, Intrinsic Value [Roll Forward] |  |
Balance at beginning | $ 7,317,000 | $ 5,300,000
Balance at end | $ 12,476,000 | $ 7,317,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Average Remaining Term [Roll Forward] |  |
Balance at beginning | 5 years 22 days | 5 years 5 months 26 days
Balance at end | 4 years 2 months 23 days | 5 years 22 days
Exercisable at end | 3 years 7 months 24 days |

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- Definition Weighted average fair value price of options that were either forfeited or expired. + References No definition available. + Details
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- Definition Weighted average fair value per share amount at which grantees can acquire shares of common stock by exercise of options. + References No definition available. + Details
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- Definition Weighted average fair value price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References No definition available. + 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 No definition available. + Details
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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://www.xbrl.org/2003/role/presentationRef -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=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + 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 (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + 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 (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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