Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balance at Jan. 01, 2011	$ 83,042	$ 537	$ 271,047	$ (9)	$ (187,290)	$ (1,243)
Beginning Balance, Shares at Jan. 01, 2011		53,654,496
Vesting of restricted stock, Shares		5,000
Stock-based compensation	1,773		1,773
Exercise of stock options, including tax benefit of $0, Shares	0
Comprehensive income (loss), net of tax effect	(555)					(555)
Net income (loss)	(16,898)				(16,898)
Ending Balance at Dec. 31, 2011	67,362	53	272,820	(9)	(204,188)	(1,798)
Ending Balance, Shares at Dec. 31, 2011		53,659,496
Vesting of restricted stock, Shares		10,639
Acquisition of treasury stock	(3,946)			(3,946)
Acquisition of treasury stock, Shares	(1,996,772)	(922,694)
Stock-based compensation	1,363		1,363
Exercise of stock options, including tax benefit of $0	92		92
Exercise of stock options, including tax benefit of $0, Shares	66,838	66,838
Comprehensive income (loss), net of tax effect	384					384
Net income (loss)	8,955				8,955
Ending Balance at Dec. 29, 2012	74,210	537	274,275	(3,955)	(195,233)	(1,414)
Ending Balance, Shares at Dec. 29, 2012	53,737,000	52,814,279
Acquisition of treasury stock	(56,091)			(56,091)
Acquisition of treasury stock, Shares	(1,996,772)	(7,865,249)
Retirement of treasury stock		(68)	(49,932)	50,000
Stock-based compensation	970		970
Exercise of stock options, including tax benefit of $0	3,580	20	3,560
Exercise of stock options, including tax benefit of $0, Shares	1,922,167	1,922,167
Excess tax benefit on stock-based compensation	396		396
Comprehensive income (loss), net of tax effect	(809)					(809)
Net income (loss)	26,819				26,819
Ending Balance at Dec. 28, 2013	$ 49,075	$ 489	$ 229,269	$ (10,046)	$ (168,414)	$ (2,223)
Ending Balance, Shares at Dec. 28, 2013	48,868,000	46,871,197