FAIR VALUE MEASUREMENT (The liability component was valued based on the Income Approach) (Details) - Fair Value, Inputs, Level 3 [Member] |
3 Months Ended |
---|---|
Mar. 31, 2018
$ / shares
| |
Four Point Five Percentage Convertible Notes [Member] | |
Stock price (USD) | $ 0.5399 |
Expected term (years) | 5 months 16 days |
Risk free rate | 1.88% |
Volatility | 62.44% |
Yield | 12.89% |
Seven Point Five Percentage Convertible Notes [Member] | |
Stock price (USD) | $ 0.5399 |
Expected term (years) | 3 years 7 months 17 days |
Risk free rate | 2.45% |
Volatility | 70.96% |
Yield | 12.44% |