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Note 8 - Loans and Related Allowance for Credit Losses - Primary Segments of the Loan Portfolio (Details) - USD ($)
Mar. 31, 2023
Jan. 01, 2023
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2021
Outstanding balance $ 1,382,847,000   $ 1,352,872,000    
Less: Allowance for credit losses (20,162,000) $ (14,438) (14,438,000) $ (14,492,000) $ (14,342,000)
Net loans 1,362,685,000   1,338,434,000    
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]          
Outstanding balance 185,661,000   191,748,000    
Less: Allowance for credit losses (2,678,000) (2,203) (2,203,000) (1,765,000) (1,836,000)
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]          
Outstanding balance 394,331,000   380,580,000    
Less: Allowance for credit losses (4,712,000) (5,597) (5,597,000) (7,672,000) (7,431,000)
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]          
Outstanding balance 63,892,000   58,251,000    
Less: Allowance for credit losses (1,371,000) (662) (662,000) (419,000) (454,000)
Residential Portfolio Segment [Member]          
Outstanding balance 306,179,000   296,308,000    
Less: Allowance for credit losses (4,967,000) (2,047) (2,047,000) (1,801,000) (1,740,000)
Commercial And Industrial [Member]          
Outstanding balance 195,024,000   195,602,000    
Less: Allowance for credit losses (3,819,000) (1,483) (1,483,000) (904,000) (882,000)
Home Equity Lines of Credit [Member]          
Outstanding balance 126,555,000   128,065,000    
Less: Allowance for credit losses (809,000) (1,753) (1,753,000) (1,355,000) (1,452,000)
Construction and Other [Member]          
Outstanding balance 103,389,000   94,199,000    
Less: Allowance for credit losses (1,553,000) (609) (609,000) (558,000) (533,000)
Consumer Portfolio Segment [Member]          
Outstanding balance 7,816,000   8,119,000    
Less: Allowance for credit losses $ (253,000) $ (84) $ (84,000) $ (18,000) $ (14,000)