Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator:
Net income (loss) attributable to common stockholders	$ (35,018)	$ (16,034)	$ (43,092)	$ 64,012
Denominator:
Weighted average common shares outstanding, basic	57,059,610	56,399,255	57,003,162	56,351,377
Effect of dilutive securities				1,691,442
Weighted average common shares outstanding, diluted	57,059,610	56,399,255	57,003,162	58,042,819
Basic net income (loss) (in dollars per share)	$ (0.61)	$ (0.28)	$ (0.76)	$ 1.14
Diluted net income (loss) (in dollars per share)	$ (0.61)	$ (0.28)	$ (0.76)	$ 1.10