CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands		Total	Ordinary Shares	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings (Accumulated Deficit)
Balance at Dec. 31, 2017		$ 113,564		$ 697,165	$ (1,343)	$ (582,258)
Balance (in shares) at Dec. 31, 2017			89,478,032
Proceeds from issuance of shares		938		938
Proceeds from issuance of shares (in shares)			54,386
Share-based compensation to employees		29,205		29,205
Exercise of options and warrants and vested RSUs		16,779		16,779
Exercise of options and warrants and vested RSUs (in shares)			3,475,426
Cumulative effect adjustment on retained earnings	[1]	2,162				2,162
Other comprehensive income (loss), net of tax benefit of $21		216			216
Net income (loss)		(47,928)				(47,928)
Balance at Sep. 30, 2018		$ 114,936		$ 744,087	$ (1,127)	$ (628,024)
Balance (in shares) at Sep. 30, 2018			93,007,844

[1] Resulting from the adoption of ASC 606.