Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (14,091)	$ (18,246)
Other comprehensive income:
Foreign currency translation adjustments, net of zero tax	2,937	6,102
Unrealized gains on available-for-sale securities, net of zero tax	0	1
Total other comprehensive income	2,937	6,103
Comprehensive loss	$ (11,154)	$ (12,143)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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