Share-Based Compensation - Summary of Stock Options Outstanding (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2021 $ / shares shares
Number of Shares
Beginning of period (in shares) | shares	2,098
Granted (in shares) | shares	207
Exercised (in shares) | shares	(71)
Forfeited (in shares) | shares	(1)
Expired (in shares) | shares	(8)
End of period (in shares) | shares	2,225
Weighted Average Exercise Price
Beginning of period (in dollars per share) | $ / shares	$ 33.35
Granted (in dollars per share) | $ / shares	28.45
Exercised (in dollars per share) | $ / shares	24.77
Forfeited (in dollars per share) | $ / shares	39.38
Expired (in dollars per share) | $ / shares	33.22
End of period (in dollars per share) | $ / shares	$ 33.16