Earnings Per Share - Antidilutive Securities (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share
Total anti-dilutive securities	2,700	5,060	2,670	4,920
Share-based awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Total anti-dilutive securities	60	650	60	510
Convertible note hedge and capped call transactions
Antidilutive Securities Excluded from Computation of Earnings Per Share
Total anti-dilutive securities	2,640	0	2,610	0
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share
Total anti-dilutive securities	0	4,410	0	4,410