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Note 4 - Goodwill and Other Intangible Assets - Estimated Future Annual Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Thereafter $ 23    
Total 422 $ 501 $ 1,173
Finite-lived Intangible Assets, Excluding Projects in Process [Member]      
2023 159    
2024 87    
2025 14    
2026 14    
2027 14    
Total $ 311