Stock-Based Compensation - Schedule of Stock Option Activity and Weighted Average Exercise Prices (Details) - Employee Stock Option $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($) $ / shares shares
Options
Beginning balance (in shares) | shares	792,943
Granted (in shares) | shares	0
Forfeited or expired (in shares) | shares	(77,064)
Exercised (in shares) | shares	(70,936)
Ending balance (in shares) | shares	644,943
Options exercisable at September 30, 2019 (in shares) | shares	577,240
Weighted- Average Exercise Price
Beginning balance (in dollars per share) | $ / shares	$ 47.59
Granted (in dollars per share) | $ / shares	0
Forfeited or expired (in dollars per share) | $ / shares	54.64
Exercised (in dollars per share) | $ / shares	32.71
Ending balance (in dollars per share) | $ / shares	48.66
Options exercisable at September 30, 2019 (in dollars per share) | $ / shares	$ 48.62
Weighted-Average Remaining Contractual Term (Years)
Weighted-average remaining contractual term, outstanding at September 30, 2019	3 years 9 months 18 days
Weighted-average remaining contractual term, options exercisable at September 30, 2019	2 years 7 months 6 days
Aggregate Intrinsic Value as of September 30, 2019
Aggregate intrinsic value outstanding at September 30, 2019 | $	$ 3,757
Aggregate intrinsic value of options exercisable at September 30, 2019 | $	$ 3,331