Earnings Per Share - Computation of Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Weighted average shares:
Weighted average common shares outstanding	50,590	51,566	50,808	51,775
Effect of dilutive securities outstanding	334	243	363	266
Diluted weighted average shares outstanding	50,924	51,809	51,171	52,041
Earnings (loss):
Income from continuing operations	$ 38,600	$ 26,581	$ 92,700	$ 87,098
Income from discontinued operations	0	516	8	816
Net income	$ 38,600	$ 27,097	$ 92,708	$ 87,914
Basic per share amounts:
Income from continuing operations	$ 0.76	$ 0.52	$ 1.82	$ 1.68
Income from discontinued operations	$ 0.00	$ 0.01	$ 0.00	$ 0.02
Net income	$ 0.76	$ 0.53	$ 1.82	$ 1.70
Diluted per share amounts:
Income from continuing operations	$ 0.76	$ 0.51	$ 1.81	$ 1.67
Income from discontinued operations	$ 0.00	$ 0.01	$ 0.00	$ 0.02
Net income	$ 0.76	$ 0.52	$ 1.81	$ 1.69