Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net (Loss)	$ (256,727)	$ (82,181)
Net (Loss) per Common Share:
Net (Loss) per Common Share, basic and diluted (in Dollars per share)	$ (2.01)	$ (0.65)
Shares used in Computing Net (Loss) per Common Share:
WEIGHTED AVERAGE BASIC AND DILUTED (in Shares)	127,648	125,566
Stock option
Shares used in Computing Net (Loss) per Common Share:
Shares subject to stock options, unvested RSUs and PSUs omitted from the calculation of (loss) per share as their effect would have been anti-dilutive (in Shares)	5,071	3,917
Unvested RSUs and PSUs
Shares used in Computing Net (Loss) per Common Share:
Shares subject to stock options, unvested RSUs and PSUs omitted from the calculation of (loss) per share as their effect would have been anti-dilutive (in Shares)	5,486	4,423