Share-Based Compensation - Summary of Stock Options Outstanding (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2020 $ / shares shares
Number of Shares
Beginning of period (in shares) | shares	2,107
Granted (in shares) | shares	210
Exercised (in shares) | shares	(99)
Forfeited (in shares) | shares	(11)
Expired (in shares) | shares	(39)
End of period (in shares) | shares	2,168
Weighted Average Exercise Price
Beginning of period (in dollars per share) | $ / shares	$ 32.99
Granted (in dollars per share) | $ / shares	24.43
Exercised (in dollars per share) | $ / shares	17.75
Forfeited (in dollars per share) | $ / shares	37.65
Expired (in dollars per share) | $ / shares	31.97
End of period (in dollars per share) | $ / shares	$ 32.85