v3.26.3
Note 1 - Summary of Significant Accounting Policies (Details Textual)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 01, 2025
USD ($)
Sep. 26, 2026
USD ($)
Sep. 27, 2025
USD ($)
shares
Sep. 26, 2026
USD ($)
shares
Sep. 27, 2025
USD ($)
shares
Dec. 27, 2025
USD ($)
Accounts Receivable, Allowance for Credit Loss   $ 500   $ 500   $ 100
Capitalized Cost, Software to be Sold, Leased, or Marketed, before Accumulated Amortization   4,900   4,900   7,000
Capitalized Cost, Software to be Sold, Leased, or Marketed, Amortization Expense   700 $ 700 $ 2,169 $ 2,127  
Number of Operating Segments       3    
Number of Reportable Segments       1    
Goodwill, Impairment Loss $ 0     $ 0    
Tangible Asset Impairment Charges       0 0  
Amortization of Debt Issuance Costs   400   1,300    
Realized Gain (Loss), Foreign Currency Transaction, before Tax   (500) $ (100) $ (1,200) $ (600)  
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares     488,000 3,500,000 588,000  
Revenue, Remaining Performance Obligation, Amount   4,600   $ 4,600    
Contract with Customer, Liability   14,400   14,400   15,300
Deferred Profit   9,546   9,546   8,626 [1]
Deferred Profit Long-term   3,300   3,300   3,700
Accumulated Other Comprehensive Income (Loss), Net of Tax   $ (40,691)   $ (40,691)   $ (32,470) [1]
Interface Solutions (“IS”) Segment [Member]            
Reporting Unit, Percentage of Total Goodwill   39.00%   39.00%    
Software, In-Development, Internally Developed, and Purchased [Member]            
Finite-Lived Intangible Asset, Useful Life (Year)   7 years   7 years    
Minimum [Member]            
Product Warranty Obligation, Term   12 months   12 months    
Maximum [Member]            
Product Warranty Obligation, Term   36 months   36 months    
Building [Member] | Minimum [Member]            
Property, Plant, and Equipment, Useful Life   30 years   30 years    
Building [Member] | Maximum [Member]            
Property, Plant, and Equipment, Useful Life   40 years   40 years    
Building Improvements [Member] | Minimum [Member]            
Property, Plant, and Equipment, Useful Life   5 years   5 years    
Building Improvements [Member] | Maximum [Member]            
Property, Plant, and Equipment, Useful Life   15 years   15 years    
Machinery, Equipment and Software [Member] | Minimum [Member]            
Property, Plant, and Equipment, Useful Life   3 years   3 years    
Machinery, Equipment and Software [Member] | Maximum [Member]            
Property, Plant, and Equipment, Useful Life   10 years   10 years    
[1] Derived from December 27, 2025, audited financial statements