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Note 6 - Goodwill and Intangibles - Estimated Amortization Expense of Core Deposit Intangible (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Net book value $ 16,759 $ 9,349 $ 11,381  
Core Deposits [Member]        
2023 2,938      
2024 2,761      
2025 2,645      
2026 2,360      
2027 1,874      
Thereafter 4,181      
Net book value $ 16,759 $ 9,349 $ 11,381 $ 13,466
Customer Lists [Member]        
Net book value       $ 1,504