Share Capital - Schedule of Warrants to Purchase Ordinary Shares that were Issued to Purchase of Convertible Preferred Shares (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Class Of Warrant Or Right [Line Items]
Warrants for ordinary shares	1,933,313	3,055,761
Exercise price per share	$ 18.77
May 8, 2016
Class Of Warrant Or Right [Line Items]
Expiration date	May 08, 2016
Warrants for ordinary shares		1,108,050
Exercise price per share	$ 3.59
July 31, 2017
Class Of Warrant Or Right [Line Items]
Expiration date	Jul. 31, 2017
Warrants for ordinary shares	542,280	556,678
Exercise price per share	$ 3.59
January 22, 2018
Class Of Warrant Or Right [Line Items]
Expiration date	Jan. 22, 2018
Warrants for ordinary shares	556,678	556,678
Exercise price per share	$ 3.59
July 21, 2018
Class Of Warrant Or Right [Line Items]
Expiration date	Jul. 21, 2018
Warrants for ordinary shares	834,355	834,355
Exercise price per share	$ 3.59