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Note 18 - Stock-Based Compensation (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Share-Based Payment Arrangement, Option [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) 0    
Restricted Stock [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number (in shares) 84,593 79,017  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding $ 1,280,000 $ 1,246,000  
Share Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants In Period, Cumulative Weighted Average Grant Date Fair Value $ 578,000 788,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 5 years    
Share-Based Payment Arrangement, Expense $ 588,000 563,000 $ 531,000
Share-Based Payment Arrangement, Expense, Tax Benefit 124,000 $ 118,000 $ 111,000
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount $ 900,000    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)   4 years 2 months 12 days  
The 2015 Plan [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) 450,000