Share-Based Compensation - Summary of Stock Options Outstanding (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2020 $ / shares shares
Number of Shares
Beginning of period (in shares) | shares	2,107
Granted (in shares) | shares	215
Exercised (in shares) | shares	(101)
Forfeited (in shares) | shares	(12)
Expired (in shares) | shares	(46)
End of period (in shares) | shares	2,163
Weighted Average Exercise Price
Beginning of period (in dollars per share) | $ / shares	$ 32.99
Granted (in dollars per share) | $ / shares	24.49
Exercised (in dollars per share) | $ / shares	17.72
Forfeited (in dollars per share) | $ / shares	37.66
Expired (in dollars per share) | $ / shares	32.18
End of period (in dollars per share) | $ / shares	$ 32.85