Annual report pursuant to Section 13 and 15(d)

Note 6 - Stock-based Compensation (Details Textual)

v3.7.0.1
Note 6 - Stock-based Compensation (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended 72 Months Ended
Jul. 31, 2010
Jan. 01, 2017
Jan. 03, 2016
Dec. 28, 2014
Jan. 03, 2016
Allocated Share-based Compensation Expense   $ 78 $ 175 $ 133  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares   112,739 257,430 95,002  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options   $ 131      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   387,255 498,879  
Restricted Stock Units (RSUs) [Member]          
Allocated Share-based Compensation Expense   $ 345 $ 335 $ 131  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options   $ 783      
Minimum [Member] | Restricted Stock Units (RSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   1 year      
Maximum [Member] | Restricted Stock Units (RSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   3 years      
Incentive 2010 Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 350,000        
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum 1.00%        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized   1,500,000     1,944,022
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized, Annual Increase   182,171      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant   2,176,396      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross     0    
Incentive 2010 Plan [Member] | Minimum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 1 year        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 5 years        
Incentive 2010 Plan [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years