STOCK-BASED COMPENSATION (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |
1 Months Ended | 3 Months Ended | 12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
May 31, 2017 |
Feb. 28, 2017 |
Dec. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Jun. 08, 2018 |
Jun. 16, 2017 |
|
| Number of shares reserved for future issuance | 75 | |||||||||
| Weighted average grant date fair value other than option (in dollars per share) | $ 2.78 | $ 27.78 | $ 29.20 | |||||||
| Stock-based compensation expense | $ 567 | $ 1,627 | $ 1,790 | |||||||
| Number of shares granted options to purchase | 101,968 | 26,000 | ||||||||
| Exercise price (in dollars price per share) | $ 37.52 | $ 46.34 | ||||||||
| Exercisable, weighted average remaining contractual term | 5 years 10 months 24 days | 8 years 4 months 6 days | ||||||||
| Employee payroll deductions | $ 38,000 | |||||||||
| 2018 Incentive Stock Option Plan [Member] | ||||||||||
| Description of terms of exercise price | However, the exercise price of an incentive stock option may not be less than 110% of fair value of the common stock at the date of the grant for a 10% or more shareholder and 100% of fair value for a grantee who is not a 10% shareholder. | |||||||||
| Number of shares reserved for future issuance | 132,000 | |||||||||
| Description of stock-settled awards | The calculation shall be based on one share for every one share that was subject to an option or SAR and 1.23 shares for every one share that was subject to an award other than an option or SAR. | |||||||||
| Description of award vesting rights | Stock options granted pursuant to the Plans typically vest 1/3rd 12 months from the date of grant and 1/36th each month thereafter for 24 months and expire ten years from the date of grant. In addition, the Company issues options to directors which vest over a one-year period. In addition, the Company also issues performance-based options to executive officers, which options vest when the target parameters are met, and premium options which have an exercise price greater than the grant date fair value, subject in each case to a one year minimum service period prior to vesting. | |||||||||
| 2017 Incentive Stock Option Plan [Member] | ||||||||||
| Number of shares authorized | 128,000 | |||||||||
| Number of shares reserved for future issuance | 118,496 | |||||||||
| 2014 Employee Stock Purchase Plan [Member] | ||||||||||
| Number of shares authorized | 30,000 | |||||||||
| Number of shares reserved for future issuance | 28,242 | |||||||||
| Compensation expense | $ 36,000 | |||||||||
| Employee payroll deductions | $ 64,000 | $ 10,000 | ||||||||
| 2018 Employee Stock Purchase Plan [Member] | ||||||||||
| Compensation expense | $ 32,000 | |||||||||
| Employee payroll deductions | 3,000 | |||||||||
| Stock Option [Member] | ||||||||||
| Stock-based compensation expense | 1,600 | $ 1,700 | ||||||||
| Unrecognized compensation cost | $ 1,800 | |||||||||
| Unrecognized weighted average period | 1 year 10 months 13 days | |||||||||
| Restricted Stock Units [Member] | 2014 Incentive Stock Option Plan [Member] | Non-Employees Directors [Member] | ||||||||||
| Vesting period | 1 year | |||||||||
| Number of shares granted other than option | 563 | |||||||||
| Weighted average grant date fair value other than option (in dollars per share) | $ 381.00 | |||||||||
| Restricted Stock Units [Member] | 2014 Incentive Stock Option Plan [Member] | Non-Employees Directors 1 [Member] | ||||||||||
| Number of shares granted other than option | 563 | 488 | ||||||||
| Weighted average grant date fair value other than option (in dollars per share) | $ 229.00 | |||||||||