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COMMON STOCK, PREFERRED STOCK AND WARRANTS WITH-DOWN ROUND PROTECTION (Schedule of Information about Options Outstanding) (Details) | 12 Months Ended
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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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