Net (Loss) Income Per Share - Reconciliation of Basic and Diluted Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net loss	$ (13,445)	$ (865)
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic shares (in shares)	58,443	41,057
Effect of dilutive securities—employee and director equity awards outstanding, preferred shares and 2023 Notes (in shares)	0	0
Diluted shares (in shares)	58,443	41,057
Net loss per share - basic (in dollars per share)	$ (0.23)	$ (0.02)
Net loss per share - diluted (in dollars per share)	$ (0.23)	$ (0.02)