Net Income/(Loss) Per Share - Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share, Basic and Diluted [Abstract]
Net income/(loss)	$ (8,566)	$ (8,273)	$ 2,507	$ 663	$ (16,839)	$ 3,170
Shares used to compute net income/(loss) per share:
Weighted average shares used to compute basic net income/(loss) per share	156,583		145,451		153,106	144,951
Dilutive potential common shares			14,231			14,605
Weighted average shares used to compute diluted net income/(loss) per share	156,583		159,682		153,106	159,556
Basic net income/(loss) per share	$ (0.05)		$ 0.02		$ (0.11)	$ 0.02
Diluted net income/(loss) per share	$ (0.05)		$ 0.02		$ (0.11)	$ 0.02