Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefits recognized on stock-based compensation	$ 17,138	$ (1,972)	$ (199)
Stock-based compensation expense	$ 21,901	$ 21,507	$ 24,143
Unvested options (in shares)	1,400,233	1,999,069
Unvested options weighted-average-grant date fair value (in dollars per share)	$ 10.13	$ 7.27
Weighted-average-grant date fair value of stock options vested (in dollars per share)	13.86	7.52	$ 7.66
Weighted-average-grant date fair value of stock options granted (in dollars per share)	7.36
Weighted-average-grant date fair value of stock options forfeited (in dollars per share)	$ 7.94	$ 6.86	$ 5.24
Shares issued (in shares)	2,435,648	2,017,442	172,326
Proceeds from exercise of stock options	$ 39,332	$ 38,362	$ 2,720
Total intrinsic value of stock options exercised	45,600	27,600	500
Unrecognized compensation cost related to stock options outstanding	4,300
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefits recognized on stock-based compensation	16,700	9,100	4,000
Stock-based compensation expense	$ 8,900	9,600	10,300
Recognition period of unrecognized compensation cost (in years)	9 months 18 days
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 13,000	11,900	13,800
Recognition period of unrecognized compensation cost (in years)	10 months 2 days
Restricted stock units unvested	974,050
Unrecognized compensation cost related to restricted stock units	$ 9,900
Vested restricted stock units	$ 10,700	$ 9,900	$ 9,500
Weighted average grant date fair value of restricted stock units vested (in dollars per share)	$ 16.65	$ 17.06	$ 15.39
Weighted average grant date fair value of restricted stock units forfeited (in dollars per share)	$ 21.32	$ 17.31	$ 15.37