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Note 13 - Leases (Details Textual)
$ in Thousands
12 Months Ended
Feb. 29, 2016
USD ($)
a
Dec. 31, 2023
USD ($)
Operating Lease, Cost   $ 180
Fenner Valley Farms LLC Lease Agreement [Member]    
Lessor, Operating Lease, Term of Contract (Year) 99 years  
Area of Real Estate Property (Acre) | a 2,100  
Long-term Debt, Total $ 12,000  
Lessor, Operating Lease, Payment to be Received, Year One   420
Lessor, Operating Lease, Payment to be Received, Year Two   420
Lessor, Operating Lease, Payment to be Received, Year Three   420
Lessor, Operating Lease, Payment to be Received, Year Four   420
Lessor, Operating Lease, Payment to be Received, Year Five   $ 420
Minimum [Member]    
Lessee, Operating Lease, Remaining Lease Term (Month)   1 month
Maximum [Member]    
Lessee, Operating Lease, Remaining Lease Term (Month)   34 years