Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity (Details)

v2.4.0.8
Shareholders' Equity (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 3 Months Ended 3 Months Ended
Mar. 29, 2014
Mar. 29, 2014
2011 Plan
Mar. 29, 2014
Stock options
Mar. 29, 2014
Stock options
2011 Plan
Mar. 29, 2014
Stock options
2011 Plan
Director
Mar. 29, 2014
Stock options
2006 Plan
Mar. 29, 2014
Stock options
1997 Plan
Mar. 29, 2014
Minimum [Member]
Stock options
2011 Plan
Employees
Mar. 29, 2014
Maximum
Stock options
2011 Plan
Employees
Oct. 21, 2009
Warrant [Member]
Minimum [Member]
Oct. 21, 2009
Warrant [Member]
Maximum
Shareholders' Equity                      
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price               $ 2.89 $ 3.00    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value               $ 2.21 $ 2.30    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate 0.00%   0.00%                
Maximum number of shares of common stock which can be issued   700,000                  
Vesting period         6 months     2 years 3 years    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross       130,000              
Options outstanding (in shares)       497,000   381,000 8,000        
Warrants outstanding $ 278                    
Exercise price of warrants                   0.73 3.55
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate     86.50%                
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate     2.10%                
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term     7 years