Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity (Details)

v3.3.1.900
Shareholders' Equity (Details) - USD ($)
 12 Months Ended
May. 09, 2013
Jan. 02, 2016
Jan. 03, 2015
Dec. 28, 2013
Jan. 02, 2016
Jan. 03, 2015
Shareholders' Equity            
Document Fiscal Year Focus   2015        
Issuance of Common Stock   $ 24,000 $ 24,000      
Granted (in shares)   100,000        
Assumptions used to estimate the fair value of stock options granted            
Expected dividend yield (as a percent)   0.00%        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]            
Granted (in shares)   100,000        
Outstanding Options, Weighted Average Remaining Contractual Life (in years)   5 years 2 months 22 days 4 years 6 months 21 days      
Options exercisable at January 2, 2016         $ 0 $ 212
Common Stock [Member]            
Shareholders' Equity            
Issuance of Common Stock (in Shares)   13,000 0      
Issuance of Common Stock   $ 24,000 $ 24,000      
Stock Issued During Period, Shares, Period Increase (Decrease)     217,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]            
Exercised   (13,000)        
2011 Plan            
Shareholders' Equity            
Maximum number of shares of common stock which can be issued         700,000  
Stock options            
Shareholders' Equity            
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price   $ 2.67   $ 2.73    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value         $ 0  
Options Outstanding   905,000 766,000 766,000 780,000 905,000
Granted (in shares)   130,000 219,000      
Granted, exercise price   $ 1.33 $ 3.04      
Weighted average grant date fair value (in dollars per share)   $ 1.12 $ 2.34      
Assumptions used to estimate the fair value of stock options granted            
Expected dividend yield (as a percent)   0.00% 0.00%      
Expected stock price volatility (as a percent)   84.80% 83.82%      
Risk-free interest rate (as a percent)   2.16% 2.16%      
Expected life of options (in years)   10 years 7 years 6 months 18 days      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]            
Options Outstanding Balance   905,000 766,000      
Granted (in shares)   130,000 219,000      
Exercised   (12,000) (10,000)      
Cancelled/expired   (173,000)        
Options Outstanding Balance   780,000 905,000 766,000    
Options exercisable at January 2, 2016         632  
Weighted average exercise Price, balance   $ 3.25 $ 3.26      
Granted, exercise price   1.33 3.04      
Exercisesd, exercise Price   1.89 2.38      
Expired, exercise price   4.63        
Weighted Average Exercise Price, balance   $ 2.70 $ 3.25 $ 3.26    
Options exercisable at January 2, 2016         $ 2.79  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period   70,000   70,000    
Stock options | Common Stock [Member]            
Shareholders' Equity            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value         $ 10,000 $ 9,000
Stock options | 2011 Plan            
Shareholders' Equity            
Options Outstanding   534,000     534,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]            
Options Outstanding Balance   534,000        
Stock options | 2011 Plan | Employees            
Shareholders' Equity            
Vesting period 2 years          
Stock options | 2011 Plan | Non-employee directors            
Shareholders' Equity            
Vesting period 6 months          
Stock options | 2006 Plan            
Shareholders' Equity            
Options Outstanding   238,000     238,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]            
Options Outstanding Balance   238,000        
Stock options | 1997 Plan            
Shareholders' Equity            
Options Outstanding   8,000     8,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]            
Options Outstanding Balance   8,000