Loss per Share - Schedule of Loss per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Basic loss per share, net loss	$ (56,519)	$ (37,020)
Diluted loss per share, net loss	$ (56,519)	$ (37,020)
Basic loss per share, Shares	78,213	83,354
Diluted loss per share, Shares	78,213	83,354
Basic loss per share, Per Share Amount	$ (0.72)	$ (0.44)
Diluted loss per share, Per Share Amount	$ (0.72)	$ (0.44)