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COMMON STOCK, PREFERRED STOCK AND WARRANTS WITH-DOWN ROUND PROTECTION (Schedule of Information about Options Outstanding) (Details)	12 Months Ended
	Dec. 31, 2017 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding at December 31 | shares	5,236,967
Exercisable at December 31 | shares	2,428,716
$6.25 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 6.25
Maximum exercise price	$ 6.25
Outstanding at December 31 | shares	351,712
Weighted average remaining contractual life years	4 years 2 months 8 days
Weighted average exercise price	$ 6.25
Exercisable at December 31 | shares	351,712
Weighted average remaining contractual life years	4 years 2 months 8 days
$6.02 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 6.02
Maximum exercise price	$ 6.02
Outstanding at December 31 | shares	4,273
Weighted average remaining contractual life years	11 days
Weighted average exercise price	$ 6.02
Exercisable at December 31 | shares	4,273
Weighted average remaining contractual life years	11 days
$7.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 7.00
Maximum exercise price	$ 7.00
Outstanding at December 31 | shares	22,000
Weighted average remaining contractual life years	6 years 6 months
Weighted average exercise price	$ 7.00
Exercisable at December 31 | shares	22,000
Weighted average remaining contractual life years	6 years 6 months
$4.75 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 4.75
Maximum exercise price	$ 4.75
Outstanding at December 31 | shares	12,000
Weighted average remaining contractual life years	8 years 4 days
Weighted average exercise price	$ 4.75
Exercisable at December 31 | shares	12,000
Weighted average remaining contractual life years	8 years 4 days
$4.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 4.50
Maximum exercise price	$ 4.50
Outstanding at December 31 | shares	79,998
Weighted average remaining contractual life years	8 years 2 months 16 days
Weighted average exercise price	$ 4.50
Exercisable at December 31 | shares	79,998
Weighted average remaining contractual life years	8 years 2 months 16 days
$4.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 4.50
Maximum exercise price	$ 4.50
Outstanding at December 31 | shares	26,666
Weighted average remaining contractual life years	8 years 10 months 17 days
Weighted average exercise price	$ 4.50
Exercisable at December 31 | shares	22,793
Weighted average remaining contractual life years	8 years 10 months 17 days
$4.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 4.50
Maximum exercise price	$ 4.50
Outstanding at December 31 | shares	1,673,996
Weighted average remaining contractual life years	9 years 2 months 16 days
Weighted average exercise price	$ 4.50
Exercisable at December 31 | shares	1,231,016
Weighted average remaining contractual life years	9 years 2 months 16 days
$5.41 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 5.41
Maximum exercise price	$ 5.41
Outstanding at December 31 | shares	559,414
Weighted average remaining contractual life years	9 years 2 months 16 days
Weighted average exercise price	$ 5.41
Exercisable at December 31 | shares	0
Weighted average remaining contractual life years	9 years 2 months 16 days
$7.75 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 7.75
Maximum exercise price	$ 7.75
Outstanding at December 31 | shares	844,130
Weighted average remaining contractual life years	9 years 2 months 16 days
Weighted average exercise price	$ 7.75
Exercisable at December 31 | shares	0
$4.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 4.50
Maximum exercise price	$ 4.50
Outstanding at December 31 | shares	661,875
Weighted average remaining contractual life years	9 years 3 months 4 days
Weighted average exercise price	$ 4.50
Exercisable at December 31 | shares	304,615
$7.75 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 7.75
Maximum exercise price	$ 7.75
Outstanding at December 31 | shares	50,000
Weighted average remaining contractual life years	9 years 3 months 4 days
Weighted average exercise price	$ 7.75
Exercisable at December 31 | shares	16,667
Weighted average remaining contractual life years	9 years 3 months 4 days
$4.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 4.50
Maximum exercise price	$ 4.50
Outstanding at December 31 | shares	74,470
Weighted average remaining contractual life years	9 years 4 months 28 days
Weighted average exercise price	$ 7.50
Exercisable at December 31 | shares	65,709
Weighted average remaining contractual life years	9 years 4 months 28 days
$4.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 4.50
Maximum exercise price	$ 4.50
Outstanding at December 31 | shares	290,585
Weighted average remaining contractual life years	9 years 5 months 23 days
Weighted average exercise price	$ 4.50
Exercisable at December 31 | shares	140,660
Weighted average remaining contractual life years	9 years 5 months 23 days
$4.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Minimum exercise price	$ 4.50
Maximum exercise price	$ 4.50
Outstanding at December 31 | shares	585,848
Weighted average remaining contractual life years	9 years 8 months 16 days
Weighted average exercise price	$ 4.50
Exercisable at December 31 | shares	177,273
Weighted average remaining contractual life years	9 years 8 months 16 days

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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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
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-Name Accounting Standards Codification
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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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