Note 7 - Loans and Related Allowance for Credit Losses - Past Due Loans (Details) - USD ($) $ in Thousands		Mar. 31, 2025	Dec. 31, 2024
Financing Receivable, before Allowance for Credit Loss, Total	[1],[2]	$ 1,550,349	$ 1,519,614
Financial Asset, Not Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		1,537,764	1,501,824
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		2,344	4,665
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		359	3,114
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		9,882	10,011
Financial Asset, Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		12,585	17,790
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member]
Financing Receivable, before Allowance for Credit Loss, Total	[1],[2]	185,412	181,447
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		185,243	180,752
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		47	513
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		0	122
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		122	60
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] | Financial Asset, Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		169	695
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member]
Financing Receivable, before Allowance for Credit Loss, Total	[1],[2]	413,621	412,291
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		405,609	402,924
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		0	1,355
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		8,012	8,012
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] | Financial Asset, Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		8,012	9,367
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Financing Receivable, before Allowance for Credit Loss, Total	[1],[2]	88,737	89,849
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		88,737	89,756
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		0	93
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		0	0
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] | Financial Asset, Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		0	93
Residential Portfolio Segment [Member]
Financing Receivable, before Allowance for Credit Loss, Total	[1],[2]	351,274	353,442
Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		348,246	349,645
Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		1,805	2,216
Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		233	562
Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		990	1,019
Residential Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		3,028	3,797
Commercial And Industrial [Member]
Financing Receivable, before Allowance for Credit Loss, Total	[1],[2]	235,547	229,034
Commercial And Industrial [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		235,284	226,669
Commercial And Industrial [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		242	81
Commercial And Industrial [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		10	2,284
Commercial And Industrial [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		11	0
Commercial And Industrial [Member] | Financial Asset, Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		263	2,365
Home Equity Lines of Credit [Member]
Financing Receivable, before Allowance for Credit Loss, Total	[1],[2]	147,154	143,379
Home Equity Lines of Credit [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		146,597	142,484
Home Equity Lines of Credit [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		209	366
Home Equity Lines of Credit [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		94	102
Home Equity Lines of Credit [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		254	427
Home Equity Lines of Credit [Member] | Financial Asset, Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		557	895
Construction and Other [Member]
Financing Receivable, before Allowance for Credit Loss, Total	[1],[2]	122,653	103,608
Construction and Other [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		122,160	103,115
Construction and Other [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		0	0
Construction and Other [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		0	0
Construction and Other [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		493	493
Construction and Other [Member] | Financial Asset, Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		493	493
Consumer Portfolio Segment [Member]
Financing Receivable, before Allowance for Credit Loss, Total	[1],[2]	5,951	6,564
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		5,888	6,479
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		41	41
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		22	44
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		0	0
Consumer Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Financing Receivable, before Allowance for Credit Loss, Total		$ 63	$ 85

[1] Accrued interest of $5.5 million and $5.5 million at March 31, 2025 and December 31, 2024, respectively, is excluded from amortized cost and presented in "accrued interest receivable and other assets" on the Consolidated Balance Sheets.

[2] Unearned income, including net deferred loan fees and costs and unamortized premiums and discounts, totaled $7.7 million and $8.2 million at March 31, 2025 and December 31, 2024, respectively.