Earnings (Loss) Per Share - Computation of Earnings (Loss) Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Earnings Per Share [Line Items]
Weighted average common shares outstanding	50,968	51,566	51,771	51,998	52,108	53,339	54,546	55,353	51,566	53,854	57,143
Effect of dilutive securities outstanding									277	337	285
Diluted weighted average shares outstanding	51,262	51,809	52,030	52,301	52,354	53,628	54,958	55,774	51,843	54,191	57,428
Income from continuing operations	$ 34,799	$ 26,581	$ 30,353	$ 30,164	$ 32,859	$ 34,187	$ 33,169	$ 30,128	$ 121,897	$ 130,343	$ 104,614
Income (loss) from discontinued operations, net of tax	191	516	300	0	2,185	10,814	(205)	31,506	1,007	44,300	(2,836)
Net income	$ 34,990	$ 27,097	$ 30,653	$ 30,164	$ 35,044	$ 45,001	$ 32,964	$ 61,634	$ 122,904	$ 174,643	$ 101,778
Income from continuing operations	$ 0.69	$ 0.52	$ 0.58	$ 0.58	$ 0.63	$ 0.64	$ 0.60	$ 0.54	$ 2.36	$ 2.42	$ 1.83
Income (loss) from discontinued operations	$ 0.00	$ 0.01	$ 0.01	$ 0.00	$ 0.04	$ 0.20	$ 0.00	$ 0.57	$ 0.02	$ 0.82	$ (0.05)
Net income, Basic per share amounts	$ 0.69	$ 0.53	$ 0.59	$ 0.58	$ 0.67	$ 0.84	$ 0.60	$ 1.11	$ 2.38	$ 3.24	$ 1.78
Income from continuing operations	$ 0.68	$ 0.51	$ 0.58	$ 0.58	$ 0.63	$ 0.64	$ 0.60	$ 0.54	$ 2.35	$ 2.40	$ 1.82
Income (loss) from discontinued operations	$ 0.00	$ 0.01	$ 0.01	$ 0.00	$ 0.04	$ 0.20	$ 0.00	$ 0.56	$ 0.02	$ 0.82	$ (0.05)
Net income, Diluted per share amounts	$ 0.68	$ 0.52	$ 0.59	$ 0.58	$ 0.67	$ 0.84	$ 0.60	$ 1.10	$ 2.37	$ 3.22	$ 1.77