Capital Stock - Summary of Common Stock Activity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balances (in shares)	(37,372,474)
Stock options exercised (in shares)	341,063	64,752	190,743
Ending Balances (in shares)	(37,736,578)	(37,372,474)
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balances (in shares)	(62,081,391)	(62,081,391)	(62,081,391)
Treasury shares purchased (in shares)	0	0	0
Ending Balances (in shares)	(62,081,391)	(62,081,391)	(62,081,391)
Beginning Balances	$ (157,643)	$ (148,401)	$ (132,055)
Tax benefit related to stock plans	478	597	2,573
Treasury shares purchased for stock compensation programs	0	0	0
Ending Balances	$ (172,681)	$ (157,643)	$ (148,401)
Stock Compensation Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balances (in shares)	0	0	(303,668)
Treasury shares purchased (in shares)	0	0	0
Ending Balances (in shares)	0	0	0
Beginning Balances	$ 0	$ 0	$ (1,585)
Tax benefit related to stock plans	0	0	0
Treasury shares purchased for stock compensation programs	0	0	0
Ending Balances	$ 0	$ 0	$ 0
Treasury
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balances (in shares)	(24,708,917)	(24,633,081)	(24,575,624)
Treasury shares purchased (in shares)	(40,429)	(59,056)	(107,096)
Ending Balances (in shares)	(24,344,813)	(24,708,917)	(24,633,081)
Beginning Balances	$ (293,318)	$ (284,805)	$ (279,772)
Tax benefit related to stock plans	0	0	0
Treasury shares purchased for stock compensation programs	(1,881)	(2,781)	(5,654)
Ending Balances	$ (287,501)	$ (293,318)	(284,805)
Restricted Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock awards			$ (161)
Restricted Stock | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock awards (in shares)	0	0	0
Restricted stock forfeitures (in shares)	0	0	0
Restricted stock awards	$ (355)	$ (404)	$ (538)
Share-based compensation expense	3,604	3,461	4,372
Restricted stock forfeitures	$ (148)	$ (426)	$ (346)
Restricted Stock | Stock Compensation Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock awards (in shares)	0	0	72,291
Restricted stock forfeitures (in shares)	0	0	0
Restricted stock awards	$ 0	$ 0	$ (377)
Share-based compensation expense	0	0	0
Restricted stock forfeitures	$ 0	$ 0	$ 0
Restricted Stock | Treasury
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock awards (in shares)	29,836	34,624	13,936
Restricted stock forfeitures (in shares)	(2,800)	(18,468)	(4,078)
Restricted stock awards	$ (355)	$ (404)
Share-based compensation expense	0	0	$ 0
Restricted stock forfeitures	$ 0	$ 0	$ 0
Stock Options | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock forfeitures (in shares)	0	0
Stock options exercised (in shares)	0	0	0
Share-based compensation expense	$ 2,484	$ 2,572	$ 2,355
Restricted stock forfeitures	(25)	(118)
Stock options exercised	$ 5,617	$ 1,714	$ 5,678
Stock Options | Stock Compensation Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock forfeitures (in shares)	0	0
Stock options exercised (in shares)	0	0	150,962
Share-based compensation expense	$ 0	$ 0	$ 0
Restricted stock forfeitures	0	0
Stock options exercised	$ 0	$ 0	$ 788
Stock Options | Treasury
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock forfeitures (in shares)	0	0
Stock options exercised (in shares)	336,904	52,708	39,781
Share-based compensation expense	$ 0	$ 0	$ 0
Restricted stock forfeitures	0	0
Stock options exercised	$ 6,859	$ 216	$ 460
Performance Stock | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock forfeitures (in shares)	0	0	0
Performance stock issued (in shares)	0	0	0
Share-based compensation expense	$ 3,324	$ 2,265	$ 2,705
Restricted stock forfeitures	(28)	(155)	(33)
Performance stock issued	$ (371)	$ (616)	$ (420)
Performance Stock | Stock Compensation Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock forfeitures (in shares)	0	0	0
Performance stock issued (in shares)	0	0	80,415
Share-based compensation expense	$ 0	$ 0	$ 0
Restricted stock forfeitures	0	0	0
Performance stock issued	$ 0	$ 0	$ (420)
Performance Stock | Treasury
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock forfeitures (in shares)	0	0	0
Performance stock issued (in shares)	31,093	52,839	0
Share-based compensation expense	$ 0	$ 0	$ 0
Restricted stock forfeitures	0	0	0
Performance stock issued	$ (371)	$ (616)	$ 0
Employee Stock Purchase Plan | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Performance stock issued (in shares)	0	0
Performance stock issued	$ (458)	$ (352)
Employee Stock Purchase Plan | Stock Compensation Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Performance stock issued (in shares)	0	0
Performance stock issued	$ 0	$ 0
Employee Stock Purchase Plan | Treasury
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Performance stock issued (in shares)	9,500	11,517
Performance stock issued	$ (113)	$ (136)
Share Repurchase Program, May 2015 | Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury shares purchased (in shares)	0	0
Treasury shares purchased for stock compensation programs		$ 0
Share Repurchase Program, May 2015 | Stock Compensation Trust
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury shares purchased (in shares)		0
Treasury shares purchased for stock compensation programs		$ 0
Share Repurchase Program, May 2015 | Treasury
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury shares purchased (in shares)		(150,000)
Treasury shares purchased for stock compensation programs		$ (7,104)