Represents the number of quarters from the date of grant subsequent to initial vesting, over which the awards vest.

No definition available.

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Represents information pertaining to the grant-date intrinsic value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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No definition available.

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Represents the term of awards granted in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Options, Forfeitures Rate

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No definition available.

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No definition available.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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Aggregate number of common shares reserved for future issuance.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested options awarded to employees as compensation.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Number of additional shares authorized for issuance under an established share-based compensation plan.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Gross number of share options (or share units) granted during the period.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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Price of a single share of a number of saleable stocks of a company.

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Number of shares for which recognition of compensation cost was accelerated.

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Percentage of vesting of share-based compensation awards.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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

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Number of options vested.

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No definition available.

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STOCK-BASED COMPENSATION (Narrative) (Details) $ / shares in Units, $ in Thousands			1 Months Ended				12 Months Ended
	Sep. 30, 2019	Aug. 08, 2016	Jun. 30, 2017 shares	Jan. 31, 2017 shares	Aug. 31, 2016 shares	Jun. 30, 2016 shares	Dec. 31, 2018 USD ($) item $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2015	Mar. 27, 2018 $ / shares	Feb. 22, 2017 $ / shares	Dec. 31, 2014 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Remaining Life In Years							7 years 2 months 23 days	8 years 1 month 24 days	6 years
Granted (in shares) \| shares							252,500	488,300
Grant date fair value \| $							$ 779	$ 1,400
Unrecognized compensation expense related to unvested employee stock option \| $							$ 6,300
Compensation cost not yet recognized, period for recognition							2 years 1 month 13 days
Number of shares vested in the period \| shares							161,404	457,338
Number of grants in the period, weighted average exercise price \| $ / shares							$ 4.54	$ 4.62
Non-vested restricted stock unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Remaining Life In Years							7 years 2 months 23 days
Granted (in shares) \| shares							252,500	488,300
Number of quarter over which awards vest from grant date subsequent to initial vesting \| item							16
Stock compensation expense \| $							$ 469	$ 435
Unrecognized compensation expense related to unvested employee stock option \| $							$ 1,100
Options outstanding, aggregate intrinsic value \| $								2,900
Options vested, aggregate intrinsic value \| $								$ 1,700
Share price (in dollars per share) \| $ / shares							$ 1.33	$ 7.47
Expected Volatility							70.00%	60.00%
Non-vested restricted stock unit awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price (in dollars per share) \| $ / shares							$ 1.80	$ 1.93
Risk-free interest rate							2.50%	1.30%
Expected Life							7 years	7 years
Non-vested restricted stock unit awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price (in dollars per share) \| $ / shares							$ 6.0	$ 5.5
Dividend Yield							0.00%	0.00%
Risk-free interest rate							3.09%	2.06%
Expected Life							7 years	7 years
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in dollars per share) \| $ / shares							$ 4.60	$ 5.37
Stock compensation expense \| $							$ 4,800	$ 3,600
Granted (in shares) \| shares							1,661,750	722,400
Vested (in shares) \| shares							(1,051,939)	(649,359)
Number of shares forfeited in period \| shares							165,075	51,741
Restricted stock units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period							3 years
Restricted stock units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period							4 years
2014 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock approved for issuance \| shares						5,950,000						1,400,000
Reserved for future issuance \| shares							1,189,389
Number of additional shares authorized \| shares			3,250,000			1,300,000
2014 Omnibus Incentive Plan \| Non-vested restricted stock unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of award							10 years	10 years
2014 Omnibus Incentive Plan \| Non-vested restricted stock unit awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, lower limit (in dollars per share) \| $ / shares							$ 1.80	$ 4.36
2014 Omnibus Incentive Plan \| Non-vested restricted stock unit awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price range, upper limit (in dollars per share) \| $ / shares							$ 5.96	$ 7.8
Employees \| Non-vested restricted stock unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeitures rate							6.00%
Employees \| Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period							10 days
Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Remaining Life In Years							10 years
Consultants \| Non-vested restricted stock unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock compensation expense \| $							$ 7	$ 9
Executive employees \| Non-vested restricted stock unit awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accelerated vesting, number (in shares) \| shares				8,752
Option exercise period extended, number (in shares) \| shares				17,504
Plan modification, incremental compensation cost \| $							0	19
Executive employees \| Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage		50.00%
Granted (in shares) \| shares					250,000
Executive employees \| Performance Based Awards \| Maximum \| Forecast
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage	50.00%
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price (in dollars per share) \| $ / shares										$ 3.50	$ 8.25
Common Stock \| Executive employees \| 2015 Performance Plan \| Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of award \| $							74
Stock compensation expense \| $								$ 24
Compensation cost not yet recognized \| $							$ 18
Vesting period							9 months