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Note 3 - Borrowings and Credit Agreements (Details Textual)
$ in Thousands, € in Millions, ¥ in Millions, SFr in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Feb. 09, 2024
USD ($)
Jul. 01, 2023
Oct. 01, 2018
USD ($)
Sep. 28, 2024
USD ($)
Sep. 30, 2023
USD ($)
Sep. 28, 2024
USD ($)
Sep. 30, 2023
USD ($)
Dec. 30, 2023
USD ($)
Sep. 28, 2024
CHF (SFr)
Sep. 28, 2024
JPY (¥)
Dec. 30, 2023
EUR (€)
Jun. 30, 2020
EUR (€)
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]   us-gaap:SecuredOvernightFinancingRateSofrMember London Interbank Offered Rate (LIBOR) 1 [Member]                  
Long-Term Debt, Current Maturities       $ 2,606   $ 2,606   $ 6,324        
Repayments of Long-Term Debt           30,354 $ 37,467          
Gain (Loss) on Extinguishment of Debt       0 $ 0 (241) (369)          
Long-Term Line of Credit       1,407   1,407   1,773        
Ismeca [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity | SFr                 SFr 2      
Long-Term Line of Credit       $ 0   $ 0   0        
Number of Available Lines of Credit       1   1     1 1    
Revolving Credit Facility [Member]                        
Line of Credit Facility, Maximum Borrowing Capacity | ¥                   ¥ 960    
Long-Term Line of Credit       $ 1,400   $ 1,400       ¥ 200    
Secured Term Loan Facility [Member]                        
Debt Instrument, Face Amount     $ 350,000                  
Debt Instrument, Amortization, Percentage of Principal Amount     0.25%                  
Debt Instrument, Basis Spread on Variable Rate   3.00% 3.00%                  
Long-Term Debt       29,100   29,100            
Long-Term Debt, Current Maturities       3,400   3,400            
Repayments of Long-Term Debt $ 29,300           34,100          
Deferred Debt Issuance Cost, Writeoff $ 200                      
Extinguishment of Debt, Amount             34,100          
Gain (Loss) on Extinguishment of Debt             (400)          
Extinguishment of Debt Decrease Deferred Financing Costs             $ 400          
Kita Term Loans [Member]                        
Long-Term Debt       1,900   1,900   2,100        
Long-Term Debt, Current Maturities       $ 200   $ 200   200        
Kita Term Loans [Member] | Minimum [Member]                        
Debt Instrument, Interest Rate, Stated Percentage       0.05%   0.05%     0.05% 0.05%    
Kita Term Loans [Member] | Maximum [Member]                        
Debt Instrument, Interest Rate, Stated Percentage       0.69%   0.69%     0.69% 0.69%    
Loan Facilities [Member] | Construction Loans [Member]                        
Debt Instrument, Face Amount | €                       € 10.1
Long-Term Debt       $ 7,200   $ 7,200   7,700        
Long-Term Debt, Current Maturities       $ 1,000   $ 1,000   $ 1,000        
First Facility [Member] | Construction Loans [Member]                        
Debt Instrument, Face Amount | €                     € 3.4  
Debt Instrument, Interest Rate, Stated Percentage               0.80%     0.80%  
Debt Instrument, Term               10 years        
Second Facility [Member] | Construction Loans [Member]                        
Debt Instrument, Face Amount | €                     € 5.2  
Debt Instrument, Interest Rate, Stated Percentage               1.05%     1.05%  
Debt Instrument, Term               15 years        
Third Facility [Member] | Construction Loans [Member]                        
Debt Instrument, Interest Rate, Stated Percentage               1.20%     1.20%  
Debt Instrument, Term               10 years        
Debt Instrument, Collateral Amount | €                     € 0.9