Share Capital - Additional Information (Details)	6 Months Ended
	Jun. 30, 2017 $ / shares shares
Share Capital [Line Items]
The Number of ordinary shares that originally could be purchased by exercise of warrants	1,417,097
Warrants exercise price | $ / shares	$ 3.59
Options exercised for cash	639,902
Ordinary shares issued upon option exercise	639,902
Warrant
Share Capital [Line Items]
The Number of ordinary shares that originally could be purchased by exercise of warrants in cash	6,498
Warrant | Warrants Not Settleable in Cash
Share Capital [Line Items]
Number of shares issued upon the exercise of warrants	801,845