Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Capital Stock (Details Textual)

v3.10.0.1
Note 6 - Capital Stock (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 01, 2018
Jul. 02, 2017
Jul. 01, 2018
Jul. 02, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period     211,135  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 335,929   335,929  
Restricted Stock Units (RSUs) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period     99,748  
Allocated Share-based Compensation Expense, Total $ 43 $ (18) $ 144 $ 173
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period     25,000  
Employee Stock Option [Member]        
Allocated Share-based Compensation Expense, Total $ 34 $ 11 $ 59 $ 23
Common Stock [Member]        
Stock Issued During Period, Shares, Share-based Compensation, Gross     310,883