Net Loss Per Share - Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net loss	$ (7,437)	$ (1,924)
Weighted-average shares of common stock outstanding (in shares)	61,705	59,367
Basic and diluted net loss per share (in usd per share)	$ (0.12)	$ (0.03)