Shareholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended					12 Months Ended						0 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 28, 2013 Common Stock [Member]	Dec. 29, 2012 Common Stock [Member]	Dec. 28, 2013 2011 Plan	Dec. 28, 2013 Stock options	Dec. 29, 2012 Stock options	Jan. 01, 2011 Stock options	Dec. 28, 2013 Stock options Common Stock [Member]	Dec. 29, 2012 Stock options Common Stock [Member]	Dec. 28, 2013 Stock options 2011 Plan	May 09, 2013 Stock options 2011 Plan Employees	Jul. 22, 2013 Stock options 2011 Plan Management [Member]	May 09, 2013 Stock options 2011 Plan Non-employee directors	Aug. 02, 2012 Stock options 2011 Plan Non-employee directors	May 10, 2012 Stock options 2011 Plan Non-employee directors	Dec. 28, 2013 Stock options 2006 Plan	Dec. 28, 2013 Stock options 1997 Plan
Shareholders' Equity
Document Fiscal Year Focus	2013
Issuance of Common Stock (in Shares)			15,000	29,000
Issuance of Common Stock	$ 36	$ 86	$ 36	$ 86
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 164								$ 7	$ 71
Maximum number of shares of common stock which can be issued					700,000
Vesting period												2 years	3 years	6 months	6 months	6 months
Options Outstanding						766,000	533,000	588,000			367,000						391,000	8,000
Granted (in shares)						315,000	38,000					185,000	100,000	30,000	8,000	30,000
Granted, exercise price						$ 2.13	$ 4.04					$ 1.89	$ 2.65	$ 1.89	$ 4.01	$ 4.05
Weighted average grant date fair value (in dollars per share)						$ 1.68	$ 3.56					$ 1.47	$ 2.06	$ 1.66	$ 3.52	$ 3.57
Share-based Compensation Arrangement by Share-based Payment Award, Options, Number of Options that Will Vest Equally												135,000	50,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Number of Options that Will Vest Based on Achievements of Performance												50,000	50,000
Assumptions used to estimate the fair value of stock options granted
Expected dividend yield (as a percent)	0.00%					0.00%	0.00%
Expected stock price volatility (as a percent)						90.50%	95.46%
Risk-free interest rate (as a percent)						1.47%	1.80%
Expected life of options (in years)						7 years 3 months 15 days	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options Outstanding Balance						533,000		588,000			367,000						391,000	8,000
Granted (in shares)						315,000	38,000					185,000	100,000	30,000	8,000	30,000
Exercised						(15,000)	(29,000)
Cancelled/expired						(67,000)	(59,000)
Forfeiture							(5,000)
Options Outstanding Balance						766,000	533,000	588,000			367,000						391,000	8,000
Weighted average exercise Price, balance						$ 3.88		$ 3.99
Granted, exercise price						$ 2.13	$ 4.04					$ 1.89	$ 2.65	$ 1.89	$ 4.01	$ 4.05
Exercisesd, exercise Price						$ 2.38	$ 3.03
Expired, exercise price						$ 3.11	$ 5.25
Forfeiture, exercise price							$ 4.25
Weighted Average Exercise Price, balance						$ 3.26	$ 3.88	$ 3.99