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Stock-Based Compensation Plans - Additional Information (Detail) - USD ($)	1 Months Ended	12 Months Ended
	Jan. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to share-based compensation plans		$ 20,100,000	$ 17,100,000	$ 16,300,000
Compensation expense related to share-based compensation plans, net of tax		$ 14,900,000	$ 13,100,000	$ 12,100,000
Time Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants		534,580	339,196	387,841
Restricted stock grants, Weighted average grant date fair value		$ 66.02	$ 52.07	$ 38.02
Unrecognized compensation cost related to non-vested share-based compensation		$ 45,500,000	$ 27,500,000	$ 27,400,000
Unrecognized compensation cost weighted average period recognized (years)		3 years 1 month 9 days	2 years 5 months 19 days	2 years 10 months 28 days
Time Based Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period		1 year	1 year	1 year
Time Based Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period		5 years	5 years	5 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to share-based compensation plans		$ 5,800,000	$ 4,500,000	$ 3,400,000
Compensation expense related to share-based compensation plans, net of tax		$ 4,300,000	3,500,000	2,600,000
Performance Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock performance shares earned		200.00%
Additional restricted shares issued		38,000
Restricted stock vesting date		Dec. 21, 2021
Restricted stock grants		117,608
Restricted stock grants, Weighted average grant date fair value		$ 50.60
Unrecognized compensation cost related to non-vested share-based compensation		$ 6,500,000	$ 4,000,000.0	$ 3,700,000
Unrecognized compensation cost weighted average period recognized (years)		1 year 6 months	1 year 6 months	1 year 6 months
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants, Weighted average grant date fair value	$ 84.24
Total fair value of restricted shares vested		$ 25,400	$ 17,800,000	$ 14,700,000
2017 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant		401,451
Employees [Member] \| Time Based Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period		3 years
Employees [Member] \| Time Based Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period		5 years
Employees [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period	3 years
Restricted stock grants	51,794
Employees [Member] \| Performance Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants		79,608	75,288	76,500
Restricted stock grants, Weighted average grant date fair value		$ 57.00	$ 51.07	$ 37.20
Employees [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period	5 years
Restricted stock grants	198,051
Employees [Member] \| Time Based Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock grants	129,632
Outside Directors [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock vesting period	1 year
Restricted stock grants	16,625