Annual report [Section 13 and 15(d), not S-K Item 405]

Note 6 - Leases (Details Textual)

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Note 6 - Leases (Details Textual)
$ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2024
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
ft²
Dec. 31, 2023
USD ($)
Lessee, Operating Lease, Renewal Term (Year)   20 years    
Sale Leaseback Transaction, Gross Proceeds   $ 0 $ 64,150 $ 0
Sale and Leaseback Transaction, Gain (Loss), Net   (0) 42,298 $ (0)
Operating Lease, Right-of-Use Asset   68,972 70,801  
Operating Lease, Liability   $ 67,288 $ 72,179  
Unrelated Third Party [Member]        
Sale Leaseback Transaction, Number of Properties Sold     7  
Sale Leaseback Transaction, Net Book Value     $ 21,852  
Sale Leaseback Transaction, Gross Proceeds     64,150  
Sale Leaseback Transaction, Transaction Costs $ 5,494   5,494  
Sale Leaseback Transaction, Net Proceeds     $ 58,656  
Area of Real Estate Property (Square Foot) | ft²     780,000  
Sale Leaseback Transaction, Lease Term (Year)     15 years  
Sale Leaseback Transaction, Number of Renewal Options     2  
Sale Leaseback Transaction, Term of Renewal Option (Year)     10 years  
Sale and Leaseback Transaction, Gain (Loss), Net $ 42,298   $ 42,298  
Operating Lease, Right-of-Use Asset     51,879  
Operating Lease, Liability     $ 51,879  
Unrelated Third Party [Member] | WISCONSIN        
Sale Leaseback Transaction, Number of Facilities     3  
Unrelated Third Party [Member] | Illinois, Iowa, Maine, and Michigan [Member]        
Sale Leaseback Transaction, Number of Facilities     4  
Minimum [Member]        
Lessee, Operating Lease, Term of Contract (Year)   1 year    
Maximum [Member]        
Lessee, Operating Lease, Term of Contract (Year)   14 years