Share-Based Compensation - Summary of Grant Date Fair Value of Awards (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Grant date fair value of awards during the period:
Options	$ 6,513	$ 10,905
Performance Awards	1,506	0
Restricted stock	1,400	2,510
Total	9,419	13,415
Share-based compensation expense:
Options	2,163	1,632
Performance awards	41	0
Restricted stock	557	719
Total	2,761	2,351
Income tax benefit/(deficiency) related to share-based compensation:
Options	2,295	731
Restricted stock	615	334
Total	$ 2,910	$ 1,065