Share-Based Payment Transactions (Details 2) - Binomial option pricing model [Member] |
12 Months Ended | |
|---|---|---|
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Dec. 31, 2017
$ / shares
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Dec. 31, 2016
$ / shares
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| Statement Line Items [Line Items] | ||
| Dividend yield | 0.00% | 0.00% |
| Contractual life (In years) | 10 | 10 |
| Early Exercise Multiple (Suboptimal Factor) | $ 2.5 | $ 2.5 |
| Bottom of range [Member] | ||
| Statement Line Items [Line Items] | ||
| Risk-free interest rate | 1.89% | 2.01% |
| Expected volatility | 74.40% | 77.84% |
| Exercise price | $ 2.513 | $ 4.317 |
| Top of range [Member] | ||
| Statement Line Items [Line Items] | ||
| Risk-free interest rate | 2.31% | 2.02% |
| Expected volatility | 77.64% | 78.22% |
| Exercise price | $ 3.393 | $ 5.376 |
| X | ||||||||||
- Definition The early exercise price of share options granted. No definition available.
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- Definition The exercise price of share options granted. No definition available.
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- Definition Statement [line items] No definition available.
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- Definition The expected volatility of the share price used to calculate the fair value of the share options granted. Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The option life of share options granted. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price for share options granted is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). [Refer: Government [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The percentage of an expected dividend used to calculate the fair value of share options granted. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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