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Stockholders' Equity (Details Textual) (USD $)	1 Months Ended	12 Months Ended				12 Months Ended			12 Months Ended		12 Months Ended
	Jan. 31, 2007	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010	Dec. 28, 2012 Restricted Stock [Member]	Dec. 28, 2012 2003 Stock Option Plan [Member]	Dec. 28, 2012 2003 Omnibus Plan [Member]	May 19, 2010 2003 Omnibus Plan [Member]	Dec. 28, 2012 1998 Stock Option Plan [Member]	Dec. 28, 2012 Non Vested Share Based Compensation [Member]	Dec. 28, 2012 Director [Member]
Common stock, shares issued		36,423,000	36,041,000		114,500
Compensation Cost Capitalised		$ 150,000	$ 121,000	$ 85,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			121,000				968,535	2,000,000
Extended Term Of Plan							May 18, 2020
Number Outstanding at December 28, 2012		3,376,000	3,064,000				3,376,279		2,000
Lower Range of Exercise Prices		$ 0.95					$ 0.95
Upper Range of Exercise Prices		$ 7.86					$ 11.02		$ 3.60
Common stock, shares outstanding		36,423,000	36,041,000		204,500
Proceeds from the exercise of stock options		1,514,000	3,343,000	1,124,000
Granted, Weighted Average Grant Date Fair Value		$ 6.65	$ 3.85	$ 3.13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value		1,830,000	1,049,000	1,143,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value		1,240,000	2,533,000	701,000
Unrecognised Stock Based Compensation Expense										$ 4,100,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		1 year 9 months 18 days				10 years
Estimated Forfeiture Rate		9.92%
Stock Issued During Period, Shares, Issued for Services											324,162
Stock Option Maximum Shares	6,500,000

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