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Note 10 - Share-based Compensation (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Jan. 01, 2001
Mar. 29, 2025
Mar. 30, 2024
Dec. 31, 2022
Jan. 01, 2022
Jan. 02, 2021
Dec. 29, 2018
Dec. 31, 2016
Dec. 27, 2015
Dec. 28, 2024
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)   10 years                  
Share-Based Payment Arrangement, Expense   $ 773 $ 635                
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 7,200                  
Common Stock, Capital Shares Reserved for Future Issuance (in shares)   1,002,627               1,137,220  
Dividends Payable   $ 0                  
Employee Stock Purchase Plan [Member]                      
Share-Based Payment Arrangement, Expense   $ 75 84                
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date 85.00%                    
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate 10.00%                    
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee (in shares) 3,000                    
Additional Shares of Common Stock Reserved for Future Issuance (in shares)         400,000   300,000   300,000    
Common Stock, Capital Shares Reserved for Future Issuance (in shares)         1,800,000   1,400,000   1,100,000    
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)   18,192                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)   233,927                  
The 2014 Plan [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)   365,680                  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)       2,975,000             625,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)       1,000,000   850,000   500,000      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding   $ 6,400 15,900                
Performance Shares [Member]                      
Share-Based Payment Arrangement, Expense   452 $ 213                
Time-based Restricted Stock Units [Member]                      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 2,300                  
Time-based Restricted Stock Units [Member] | Immediately Vested [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)   0 0                
Time-based Restricted Stock Units [Member] | The 2014 Plan [Member]                      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 2,300                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares)   215,520               289,421  
Share Price (in dollars per share)   $ 15.86                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested   $ 3,400                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)   0                  
Performance-based Restricted Stock Units [Member]                      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 4,900                  
Performance-based Restricted Stock Units [Member] | The 2014 Plan [Member]                      
Share-Based Payment Arrangement, Expense   $ 452 $ 213                
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares)   187,500               300,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)   0                  
Minimum [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)   1 year                  
Maximum [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)   5 years