Capital Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Oct. 17, 2016
Stockholders Equity Note [Line Items]
Common stock, shares authorized	400,000,000	400,000,000
Common Stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000
Preferred stock, par value	$ 0.01
Stock Repurchase Program, Additional Repurchase Authorization					$ 300,000
Common stock repurchased, total purchase price	$ 27,604	$ 7,828	$ 4,123
Common stock repurchase, remaining authorized amount	$ 112,500
Treasury stock, shares	64,332,032	64,682,900
Activity related to restricted stock units vested [Member]
Stockholders Equity Note [Line Items]
Treasury shares issued	1,301,777	339,972	421,108
Average cost for restricted stock units	$ 2.86	$ 3.12	$ 3.15
Shares repurchased to satisfy employee withholding tax requirements resulting from certain restricted stock units becoming vested	543,369	107,420	138,080
Common stock repurchased, average cost	$ 28.51	$ 28.46	$ 30.24
Non-tender offer repurchase [Member]
Stockholders Equity Note [Line Items]
Repurchases of common stock		188,300		294,930
Common stock repurchased, total purchase price		$ 4,800		$ 7,200
Treasury Stock Acquired, Average Cost Per Share		$ 25.31		$ 24.40
2016 BOD Authorized Common Stock Repurchase [Member] | Non-tender offer repurchase [Member]
Stockholders Equity Note [Line Items]
Repurchases of common stock	407,540
Common stock repurchased, total purchase price	$ 12,100
Treasury Stock Acquired, Average Cost Per Share	$ 29.70