Stock-Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	$ 1,255	$ 1,408
Unrecognized Compensation Cost	8,629
Expiration date of the 2007 stock incentive plan	May 22, 2017
Maximum number of shares granted under restricted stock, unrestricted stock, RSU's and stock options to officers, employees and employee directors (in shares)	3,000,000
Outstanding:
Balance	384,000
Balance (in dollars per share)	$ 15.40
Granted (in shares)	0
Granted (in dollars per share)	$ 0.00
Exercised (in shares)	(22,095)
Exercised (in dollars per share)	$ 7.89
Cancelled or forfeited (in shares)	0
Cancelled or forfeited (in dollars per share)	$ 0.00
Balance	362,000
Balance (in dollars per share)	$ 15.86
Weighted average remaining contractual life of options outstanding at March 31, 2012	1.64
Vested and expected to vest [Abstract]
Vested and expected to vest (in shares)	362,000
Vested and expected to vest (in dollars per share)	$ 15.86
Remaining contractual term of options, vested and expected to vest at March 31, 2012	1.64
Exercisable (in shares)	306,000
Exercisable (in dollars per share)	$ 15.83
Remaining contractual term of options, exercisable at March 31, 2012	0.99
Share-based compensation arrangement by share-based payment award, options, vested during period (in shares)	5,000
Share-based compensation arrangement by share-based payment award, options, non-vested, outstanding (in shares)	56,000
Share-based compensation arrangement by share-based payment award, options, non-vested, weighted average grant date fair value (in dollars per share)	$ 10.10
Stock price per share (in dollars per share)	$ 12.16
Share-based compensation arrangement by share-based payment award, options, exercisable, intrinsic value	2
Stock options exercised (in shares)	22,095
Intrinsic value under share based compensation scheme	110
Outstanding:
Balance (in shares)	891,000
Balance (in dollars per share)	$ 12.58
Granted (in shares)	437,000
Granted (in dollars per share)	$ 12.31
Vested (in shares)	0
Vested (in dollars per share)	$ 0.00
Cancelled or forfeited (in shares)	0
Cancelled or forfeited (in dollars per share)	$ 0.00
Balance (in shares)	1,328,000
Balance (in dollars per share)	$ 12.49
Expected to vest at March 31, 2012 (in shares)	1,328,000
Number of RSUs with performance-based vesting criteria expected to vest	324,000
Number of RSUs with performance-based vesting criteria expected to vest	233,000
Number of RSUs with performance-based vesting criteria expected to vest	276,000
Outstanding:
Balance (in shares)	87,000
Granted (in shares)	10,000
Granted (in dollars per share)	$ 9.33
Balance (in shares)	97,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	27	120
Unrecognized Compensation Cost	65
Weighted Average Remaining Amortization Periods	1.0
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	1,135	1,066
Unrecognized Compensation Cost	8,564
Weighted Average Remaining Amortization Periods	1.8
Phantom Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	93	222
Unrecognized Compensation Cost	$ 0
Weighted Average Remaining Amortization Periods	0.0