Net Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net Income (Loss) Available to Common Stockholders, Basic [Abstract]
Net income	$ 4,057	$ 2,521
Less: Deemed dividends on convertible preferred stock		(2,098)
Less: Undistributed earnings to participating securities		(392)
Net income attributable to common stockholders	$ 4,057	$ 31
Weighted Average Number of Shares Outstanding, Basic [Abstract]
Weighted-average shares used in computing basic loss per share attributable to common stockholders (in shares)	84,537,538	5,156,755
Earnings Per Share, Basic [Abstract]
Basic net income per share attributable to common stockholders (in dollars per share)	$ 0.05	$ 0.01
Net Income (Loss) Available to Common Stockholders, Diluted [Abstract]
Net income attributable to common stockholders	$ 4,057	$ 31
Adjustments to undistributed earnings of participating securities		48
Diluted net income attributable to common stockholders	$ 4,057	$ 79
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted-average shares used in computing basic loss per share attributable to common stockholders (in shares)	84,537,538	5,156,755
Effect of dilutive securities (in shares)	15,127,620	9,964,173
Weighted-average shares used in computing diluted net (loss) income per share attributable to common stockholders (in shares)	99,665,158	15,120,928
Earnings Per Share, Diluted [Abstract]
Diluted net income per share attributable to common stockholders (in dollars per share)	$ 0.04	$ 0.01