Stock-Based Compensation (Details Textuals) (USD $) In Thousands, except Share data	6 Months Ended
	Jul. 02, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares granted under restricted stock, unrestricted stock, RSUs and stock options to officers, employees and employee directors	3,000,000
Methods used to estimate fair value of Stock options and Awards	Black-Scholes option-pricing model
Expiration date of the 2007 Stock Incentive Plan	May 22, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested During Period	155,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Non-vested, Outstanding	98,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Non-vested, Weighted Average Grant Date Fair Value	8.5
Stock price per share	$ 15.7
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 549,000
Stock options exercised (Shares)	(534,000)
The total intrinsic valueintrinsic value under share based compansation scheme	$ 1,628,000
Annual Grant Of Equity Instruments Other Than Options To Executives	5,000
Share-based Compensation Arrangement by Share-based Payment Award, Method of Measuring Cost of Award	The amount of compensation cost related to stock-based payment transactions is measured based on the grant-date fair value of the equity instruments issued. The fair value of each option award is estimated on the date of grant using the Black-Scholes option-pricing model. The Company determines compensation cost for restricted stock units ("RSUs"), phantom stock units, and restricted stock based on the grant-date fair value of the underlying common stock. Compensation cost is recognized over the period that an officer, employee, or non-employee director provides service in exchange for the award.
Recognition of Compensation Cost for RSU's Expected To Vest	The Company recognizes compensation cost for RSUs that are expected to vest. The Company expects all performance-based vesting criteria to be achieved.
Rsus Vested and Contributed To Estate Of Executive Chairman Upon His Death	98,375
Rsus Vested and Contributed To Estate Of Executive Chairman Upon Companys Achievement Of Performance-Based Criteria	202,330
Accelerated Stock Options Vested To Executive Chairman	77,334
Phantom Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares granted under restricted stock, unrestricted stock, RSUs and stock options to officers, employees and employee directors	300,000