Stockholders' Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jul. 01, 2012	Apr. 01, 2012	Dec. 31, 2011	Oct. 02, 2011	Jul. 03, 2011	Apr. 03, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 11, 2012
Capital Stock [Abstract]
Common stock, shares authorized (in shares)	100,000,000								100,000,000
Common stock, par value (in dollars per share)	$ 0.10								$ 0.10			$ 0.10
Common stock, shares outstanding (in shares)	34,949,620				35,271,981				34,949,620	35,271,981
Preferred stock, authorized (in shares)	1,000,000								1,000,000
Preferred stock, issued (in shares)	0								0
Preferred stock, outstanding (in shares)	0								0
Stock split									Board of Directors authorized a two-for-one stock split of the of the Company's outstanding common stock
Increase in stock outstanding related to stock split (in shares)									17,600,000
Cash Dividends [Abstract]
Cash dividends paid									$ 4.4
Cash dividends paid (in dollars per share)	$ 0.05	$ 0.025	$ 0.025	$ 0.025	$ 0.025	$ 0.025	$ 0.025	$ 0.025	$ 0.125
Cash dividend declared	$ 1.8								$ 1.8
Cash dividend declared (in dollars per share)	$ 0.05								$ 0.05
Stock Award and Incentive Plan [Abstract]
Maximum term of stock options granted under the plan (in years)									10
Vesting period, generally, for stock options granted under the plan (in years)									3
Shares available for grant [Roll Forward]
Balance, beginning of year (in shares)				1,677,738				1,898,578	1,677,738	1,898,578	2,068,250
Granted (in shares)									(345,696)	(381,624)	(438,920)
Canceled (in shares)									159,932	160,784	269,248
Balance, end of year (in shares)	1,491,974				1,677,738				1,491,974	1,677,738	1,898,578
Stock Options [Member]
Stock options [Roll Forward]
Balance, beginning of year (in shares)				1,573,974				1,640,060	1,573,974	1,640,060	1,575,060
Granted (in shares)									222,250	244,646	282,280
Exercised (in shares)									(330,158)	(241,196)	(63,394)
Canceled (in shares)									(70,546)	(69,536)	(153,886)
Balance, end of year (in shares)	1,395,520				1,573,974				1,395,520	1,573,974	1,640,060
Weighted average exercise price per share, Stock options [Abstract]
Balance, beginning of year (in dollars per share)				$ 27.10				$ 27.05	$ 27.10	27.05	26.27
Granted (in dollars per share)	$ 32.04				$ 32.06				$ 32.04	32.06	24.56
Exercised (in dollars per share)	$ 25.15				$ 25.01				$ 25.15	25.01	22.44
Canceled (in dollars per share)									$ 27.76	26.80	27.21
Balance, end of year (in dollars per share)	$ 28.31				$ 27.10				$ 28.31	27.10	27.05
Restricted Stock [Member]
Restricted Stock [Roll Forward]
Balance, beginning of year (in shares)				252,024				300,540	252,024	300,540	377,436
Granted (in shares)									123,446	136,978	156,640
Vested (in shares)									(102,424)	(94,246)	(118,174)
Canceled (in shares)									(89,386)	(91,248)	(115,362)
Balance, end of year (in shares)	183,660				252,024				183,660	252,024	300,540
Weighted average grant date fair value per share, Restricted stock [Abstract]
Balance, beginning of year (in dollars per share)				$ 27.21				$ 23.60	$ 27.21	23.60	25.08
Granted (in dollars per share)									$ 32.04	32.08	24.57
Vested (in dollars per share)									$ 25.90	31.99	27.22
Canceled (in dollars per share)	$ 27.08				$ 30.22				$ 27.08	30.22	26.06
Balance, end of year (in dollars per share)	$ 31.25				$ 27.21				$ 31.25	27.21	23.60