Basic and Diluted Net Income (Loss) Per Share - Performance based stock (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Antidilutive securities excluded from computation of earnings per share
Anti-dilutive securities excluded from computation of earnings per share	60,970	61,102	55,650
Strike price of the warrants	$ 86.08
Anti-dilutive stock awards
Antidilutive securities excluded from computation of earnings per share
Anti-dilutive securities excluded from computation of earnings per share	5,471	4,377	1,694
Performance based options
Antidilutive securities excluded from computation of earnings per share
Anti-dilutive securities excluded from computation of earnings per share	7,966	8,970	5,491
Restricted Performance Units/Awards
Antidilutive securities excluded from computation of earnings per share
Anti-dilutive securities excluded from computation of earnings per share	1,504	1,726	2,436
Common stock warrants
Antidilutive securities excluded from computation of earnings per share
Anti-dilutive securities excluded from computation of earnings per share	46,029	46,029	46,029