CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net loss	$ (12,481)	$ (8,134)
Adjustments required to reconcile net loss to net cash used in operating activities:
Stock-based compensation	214	4
Depreciation	186	65
Impairment of property and equipment	153
Accrued severance pay, net	(2)	7
Amortization of discount on loan	5	5
Revaluation of fair value of warrant to purchase Convertible Preferred Shares	(40)	1,534
Increase in other accounts receivable and prepaid expenses	(294)	(284)
Increase in trade payables	698	751
Increase (decrease) in other accounts payable and accrued expenses	103	(28)
Net cash used in operating activities	(11,458)	(6,080)
Cash flows from investing activities:
Proceeds from maturity of investment in restricted cash	352	352
Purchases of property and equipment	(632)	(205)
Investment in other assets	(21)
Net cash (used in) provided by investing activities	(301)	147
Cash flows from financing activities:
Proceeds from issuance of Preferred Shares and warrants, net of issuance costs	11,406	19,206
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
Repayment of loan	(281)	(281)
Proceeds from exercise of options into Ordinary Shares	145
Net cash provided by financing activities	48,737	18,925
Net increase in cash and cash equivalents	36,978	12,992
Cash and cash equivalents at the beginning of the period	6,167	2,072
Cash and cash equivalents at the end of the period	43,145	15,064
Supplemental disclosure of non-cash investing and financing activities
Purchase of property and equipment	159
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
Conversion of warrants to purchase Convertible Preferred Shares into warrants to purchase Ordinary Shares	87
Cash paid during the period
Cash paid for interest	19	34
Cash paid for taxes	$ 231	$ 1