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Stock Incentive Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Apr. 23, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 9,800	$ 8,500	$ 7,400
Related tax benefit	$ 2,300	$ 2,100	$ 2,900
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in dollars per share)	$ 38.37	$ 29.72	$ 24.03
Vested	$ 18,813	$ 11,900	$ 13,700
Total unrecognized compensation expenses	$ 32,000
Weighted average period expected to be recognized	3 years 6 months
Restricted Stock \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted, vesting period	1 year
Restricted Stock \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted, vesting period	10 years
2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)				2.8
LTI \| Restricted Stock \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted, vesting period	3 years
LTI \| Restricted Stock \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted, vesting period	4 years