CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net loss	$ (18,422)	$ (13,336)
Adjustments required to reconcile net loss to net cash used in operating activities:
Stock-based compensation	382	182
Depreciation	277	134
Impairment of property and equipment	154
Accrued severance pay, net	(2)	18
Amortization of discount on loan	8	9
Revaluation of fair value of warrants to purchase Convertible Preferred Shares	(40)	1,871
Increase in other accounts receivable and prepaid expenses	(195)	(26)
Increase in deferred revenue	2,561
Increase in trade payables	655	179
Increase (decrease) in other accounts payable and accrued expenses	(632)	1,030
Net cash used in operating activities	(15,254)	(9,939)
Cash flows from investing activities:
Proceeds from maturity of investment in restricted cash	527	527
Purchases of property and equipment	(1,326)	(293)
Investment in other assets	(21)
Net cash (used in) provided by investing activities	(820)	234
Cash flows from financing activities:
Proceeds from issuance of Preferred Shares and warrants, net of issuance costs	11,406	19,207
Proceeds from issuance of Ordinary Shares, net of issuance costs upon IPO	36,159
Proceeds from issuance of Ordinary Shares, net of underwriter's fees	1,308
Deferred IPO costs		(104)
Repayment of loan	(422)	(422)
Proceeds from exercise of options into Ordinary Shares	145	1
Net cash provided by financing activities	48,596	18,682
Net increase in cash and cash equivalents	32,522	8,977
Cash and cash equivalents at the beginning of the period	6,167	2,072
Cash and cash equivalents at the end of the period	38,689	11,049
Supplemental disclosure of non-cash investing and financing activities
Purchase of property and equipment	109	241
Conversion of Convertible Preferred Shares into Ordinary Shares	47,075
Conversion of Warrants to purchase Convertible Preferred Shares into Ordinary Shares	5,945
Non-cash deferred IPO costs	1,463	886
Conversion of warrants to purchase Convertible Preferred Shares into warrants to purchase Ordinary Shares	87
Cash paid during the period
Cash paid for interest	25	48
Cash paid for taxes	$ 278	$ 1