Capital Stock - Schedule of Common Stock Activity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Common Stock Activity [Roll Forward]
Beginning balance (in shares)	39,067,902
Beginning balance	$ 242,693
Stock options exercised (in shares)	122,087	274,704	198,535
Stock option forfeitures (in shares)	(210)	(954)	(95)
Ending balance	$ 260,121	$ 242,693
Ending balance (in shares)	39,276,518	39,067,902
Common stock
Common Stock Activity [Roll Forward]
Beginning balance (in shares)	62,081,391	62,081,391	62,081,391
Beginning balance	$ 242,693	$ 229,127	$ 211,806
Stock consideration in acquisition (in shares)			0
Stock consideration in acquisition			$ 921
Acquisition of noncontrolling interest in consolidated subsidiaries (Note 14) (in shares)	0
Acquisition of noncontrolling interests in consolidated subsidiaries	$ (4,751)
Ending balance	$ 260,121	$ 242,693	$ 229,127
Ending balance (in shares)	62,081,391	62,081,391	62,081,391
Treasury Cost
Common Stock Activity [Roll Forward]
Beginning balance (in shares)	(23,013,489)	(23,240,197)	(23,554,868)
Beginning balance	$ (326,156)	$ (303,566)	$ (296,390)
Stock consideration in acquisition (in shares)			0
Stock consideration in acquisition			$ 0
Acquisition of noncontrolling interest in consolidated subsidiaries (Note 14) (in shares)	0
Acquisition of noncontrolling interests in consolidated subsidiaries	$ 0
Ending balance	$ (328,776)	$ (326,156)	$ (303,566)
Ending balance (in shares)	(22,804,873)	(23,013,489)	(23,240,197)
Restricted Stock | Common stock
Common Stock Activity [Roll Forward]
Restricted stock awards (in shares)	0	0	0
Restricted stock awards	$ (762)	$ (773)	$ (1,253)
Restricted stock expense (in shares)	0	0	0
Restricted stock expense	$ 6,562	$ 7,065	$ 7,397
Restricted stock forfeitures (in shares)	0	0	0
Restricted stock forfeitures	$ (765)	$ (807)	$ (483)
Restricted Stock | Treasury Cost
Common Stock Activity [Roll Forward]
Restricted stock awards (in shares)	53,934	55,691	96,893
Restricted stock awards	$ 762	$ 773	$ 1,253
Restricted stock expense (in shares)	0	0	0
Restricted stock expense	$ 0	$ 0	$ 0
Restricted stock forfeitures (in shares)	0	0	0
Restricted stock forfeitures	$ 0	$ 0	$ 0
Stock options | Common stock
Common Stock Activity [Roll Forward]
Restricted stock expense (in shares)	0	0	0
Restricted stock expense	$ 90	$ 153	$ 492
Restricted stock forfeitures	$ (9)	$ (40)	$ (5)
Stock options exercised (in shares)	0	0	0
Stock options exercised	$ 4,003	$ 8,590	$ 5,107
Stock option forfeitures (in shares)	0	0	0
Stock options | Treasury Cost
Common Stock Activity [Roll Forward]
Restricted stock expense (in shares)	0	0	0
Restricted stock expense	$ 0	$ 0	$ 0
Restricted stock forfeitures	$ 0	$ 0	$ 0
Stock options exercised (in shares)	122,119	274,672	193,681
Stock options exercised	$ 1,767	$ 3,856	$ 2,364
Stock option forfeitures (in shares)	0	0	0
Performance stock | Common stock
Common Stock Activity [Roll Forward]
Restricted stock expense (in shares)	0	0	0
Restricted stock expense	$ 13,227	$ 1,305	$ 6,574
Restricted stock forfeitures (in shares)		0	0
Restricted stock forfeitures		$ (755)	$ (215)
Performance stock issued (in shares)	0	0	0
Performance stock issued	$ (939)	$ (1,826)	$ (1,778)
Performance stock | Treasury Cost
Common Stock Activity [Roll Forward]
Restricted stock expense (in shares)	0	0	0
Restricted stock expense	$ 0	$ 0	$ 0
Restricted stock forfeitures (in shares)		0	0
Restricted stock forfeitures		$ 0	$ 0
Performance stock issued (in shares)	64,543	134,824	139,478
Performance stock issued	$ 939	$ 1,826	$ 1,778
Employee Stock Purchase Plan | Common stock
Common Stock Activity [Roll Forward]
Employee stock purchase plan (in shares)	0	0	0
Employee stock purchase plan	$ 772	$ 654	$ 564
Employee Stock Purchase Plan | Treasury Cost
Common Stock Activity [Roll Forward]
Employee stock purchase plan (in shares)	5,730	6,494	5,895
Employee stock purchase plan	$ 83	$ 93	$ 77
Treasury shares purchased | Common stock
Common Stock Activity [Roll Forward]
Purchase of treasury shares (in shares)	0	0	0
Treasury shares purchased	$ 0	$ 0	$ 0
Treasury shares purchased | Treasury Cost
Common Stock Activity [Roll Forward]
Purchase of treasury shares (in shares)	(37,710)	(69,973)	(87,811)
Treasury shares purchased	$ (6,171)	$ (9,025)	$ (9,301)
Share repurchase program | Common stock
Common Stock Activity [Roll Forward]
Purchase of treasury shares (in shares)		0	0
Treasury shares purchased		$ 0	$ 0
Share repurchase program | Treasury Cost
Common Stock Activity [Roll Forward]
Purchase of treasury shares (in shares)		(175,000)	(33,465)
Treasury shares purchased		$ (20,113)	$ (3,347)