Stock-Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Stock-Based Compensation [Abstract]
Performance-based restricted stock units affected by failure to meet performance-based vesting criteria	276,000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	$ 1,048	$ 1,255
Unrecognized Compensation Cost	10,067
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	109,000
Balance (in dollars per share)	$ 15.24
Exercised (in shares)	0
Balance	109,000
Balance (in dollars per share)	$ 15.24
Weighted average remaining contractual life of options outstanding at March 30, 2013	3 years 11 months 26 days
Vested and expected to vest [Abstract]
Vested and expected to vest (in shares)	109,000
Vested and expected to vest (in dollars per share)	$ 15.24
Remaining contractual term of options, vested and expected to vest at March 30, 2013	3 years 11 months 26 days
Exercisable (in shares)	83,000
Exercisable (in dollars per share)	$ 14.93
Remaining contractual term of options, exercisable at March 30, 2013	3 years 10 months 20 days
Share-based compensation arrangement by share-based payment award, options, vested during period (in shares)	4,000
Share-based compensation arrangement by share-based payment award, options, non-vested, outstanding (in shares)	26,000
Share-based compensation arrangement by share-based payment award, options, non-vested, weighted average grant date fair value (in dollars per share)	$ 10.57
Stock price (in dollars per share)	$ 13.61
Stock options exercised (in shares)	0
Intrinsic value under share based compensation scheme	28
Outstanding:
Balance (in shares)	1,316,000
Balance (in dollars per share)	$ 12.53
Granted (in shares)	367,000
Granted (in dollars per share)	$ 12.72
Vested (in shares)	(488,000)
Vested (in dollars per share)	$ 9.85
Cancelled or forfeited (in shares)	0
Cancelled or forfeited (in dollars per share)	$ 0
Balance (in shares)	1,195,000
Balance (in dollars per share)	$ 13.68
Expected to vest at March 30, 2013 (in shares)	919,000
Number of RSUs with performance-based vesting criteria expected to vest on January 1, 2014	233,000
Number of RSUs with performance-based vesting criteria expected to vest on January 1, 2015	0
Number of RSUs with performance-based vesting criteria expected to vest on January 1, 2016	222,000
Outstanding:
Balance (in shares)	97,000
Granted (in shares)	10,000
Granted (in dollars per share)	$ 10.75
Redeemed for common stock	0
Balance (in shares)	107,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	12	27
Unrecognized Compensation Cost	6
Weighted Average Remaining Amortization Periods	1 month 6 days
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	928	1,135
Unrecognized Compensation Cost	10,061
Weighted Average Remaining Amortization Periods	1 year 9 months 18 days
Phantom Stock Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense recognized	108	93
Unrecognized Compensation Cost	$ 0
Weighted Average Remaining Amortization Periods	0 days