CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net loss	$ (13,430)	$ (12,481)
Adjustments required to reconcile net loss to net cash used in operating activities:
Stock-based compensation	380	214
Depreciation	289	186
Impairment of property and equipment		153
Accrued severance pay, net	16	(2)
Amortization of discount on loan	4	5
Revaluation of fair value of warrants to purchase Convertible Preferred Shares		(40)
Increase in other accounts receivable and prepaid expenses	(239)	(294)
Decrease in deferred revenue	(469)
Increase (decrease) in trade payables	(150)	698
Increase (decrease) in other accounts payable and accrued expenses	(251)	103
Net cash used in operating activities	(13,850)	(11,458)
Cash flows from investing activities:
Proceeds from maturity of investment in restricted cash	308	352
Purchase of property and equipment	(768)	(632)
Investment in other assets	(60)	(21)
Net cash used in investing activities	(520)	(301)
Cash flows from financing activities:
Proceeds from issuance of Convertible Preferred Shares and warrants, net of issuance costs		11,406
Net proceeds from issuance of equity		36,159
Proceeds from issuance of Ordinary Shares, net of underwriters' fees		1,308
Repayment of loan	(234)	(281)
Proceeds from exercise of options into Ordinary Shares		145
Net cash (used in) provided by financing activities	(234)	48,737
Net increase (decrease) in cash and cash equivalents	(14,604)	36,978
Cash and cash equivalents at the beginning of the period	31,851	6,167
Cash and cash equivalents at the end of the period	17,247	43,145
Supplemental disclosure of non-cash investing and financing activities:
Purchase of property and equipment	240	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 year:
Cash paid for interest	3	19
Cash paid for taxes	$ 310	$ 231