Net Income (Loss) Per Share Attributable to Common Stockholders - Other (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income (loss) (Numerator):
Net income (loss) for basic and diluted EPS	$ 9,733	$ (6,155)
Shares (Denominator):
Weighted-average number of common shares outstanding (in shares)	27,506,927	1,379,444
Effect of dilutive common stock equivalents (in shares)	1,841,688
Weighted-average shares for diluted EPS (in shares)	29,348,615	1,379,444
Basic EPS (in dollars per share)	$ 0.35	$ (4.46)
Diluted EPS (in dollars per share)	$ 0.33	$ (4.46)