Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (9,065)	$ (8,250)
Other comprehensive income:
Net change in unrealized gains on available-for-sale securities	282	43
Comprehensive loss	$ (8,783)	$ (8,207)

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

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