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Stock Incentive Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Apr. 22, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 11,600	$ 9,800	$ 8,500
Related tax benefit	$ 3,400	$ 2,300	$ 2,100
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in dollars per share)	$ 40.11	$ 38.37	$ 29.72
Vested	$ 17,958	$ 18,800	$ 11,900
Total unrecognized compensation expenses	$ 35,700
Weighted average period expected to be recognized	3 years 3 months 18 days
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
2020 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for grant (in shares)				3.7
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