Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Summary of Stock Options Activity (Details)

v3.23.1
Stockholders' Equity - Summary of Stock Options Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2022
Jan. 01, 2022
Jan. 02, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Options Outstanding, Beginning Balance 117,500 113,900  
Options Outstanding, Cancelled/expired (7,500) (28,400)  
Options Outstanding, Granted   38,000  
Options Outstanding, Exercised   6,000  
Options Outstanding, Ending Balance 110,000 117,500 113,900
Options Outstanding, Exercisable 110,000    
Weighted Average Exercise Price      
Weighted Average Exercise Price, Beginning Balance $ 7.16 $ 11.97  
Weighted Average Exercise Price, Cancelled/expired 0 9.71  
Weighted Average Exercise Price, Granted   8.16  
Weighted Average Exercise Price, Exercised   4.32  
Weighted Average Exercise Price, Ending Balance 6.27 $ 7.16 $ 11.97
Weighted Average Exercise Price, Exercisable $ 6.27    
Aggregate Intrinsic Value, Options Outstanding $ 0 $ 21 $ 78
Aggregate Intrinsic Value, Options Exercisable $ 0    
Weighted Average Remaining Contractual Life 6 years 6 months 7 years 7 years
Weighted Average Remaining Contractual Life, Exercisable 6 years 6 months