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Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Percentage of vesting of award under share-based payment arrangement.

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Share-Based Plans - Narrative (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized	17,400,000
Number of common shares available for grant	2,600,000
Unrecognized stock compensation expense	$ 36,300
Unrecognized stock compensation expense, recognition period (in years)	1 year 9 months 18 days
Award vesting percentage	50.00%
Fair value of restricted stock awards	$ 51,700	$ 12,500	$ 13,500
Stock options granted	458,881
Aggregate intrinsic value	$ 2,100
Total intrinsic value of options exercised	1,000	9,000	100
Exercise of stock options	$ 700	$ 7,100	$ 200
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	1 year
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock appreciation rights granted	711,503
Restricted Stock \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares available for grant	100,000
Performance-Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock appreciation rights granted	307,852
Performance-Based \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	0.00%
Performance-Based \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	150.00%
Stock Options Outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted	0
Number of options outstanding (in shares)	88,229	107,612
Non-Qualified Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding (in shares)	77,951
Incentive Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual life (in years)	ten
Number of options outstanding (in shares)	10,278