Income per Share - Basis for Income per Share Computations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]
Income from continuing operations	$ 25,156	$ 22,245
Loss from disposal of discontinued operations, net of tax	(562)
Net income	$ 24,594	$ 22,245
Weighted average shares outstanding, basic	43,514	44,420
Effect of dilutive common stock equivalents	779	1,007
Weighted average shares outstanding, diluted	44,293	45,427