Note 4 - Loans - Aging of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Loans	$ 3,163,934	$ 3,221,607
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	7,452	174
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	96
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Financial Asset, Past Due [Member]
Loans, nonaccrual, with allowance	1,184	1,190
Loans, nonaccrual, with no allowance	2,326	2,039
Loans, nonaccrual	10,962	3,499
Financial Asset, Not Past Due [Member]
Loans	3,152,972	3,218,108
Commercial Portfolio Segment [Member]
Loans	134,095	136,732
Commercial Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	174
Commercial Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	96
Commercial Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Commercial Portfolio Segment [Member] \| Financial Asset, Past Due [Member]
Loans, nonaccrual, with allowance	0	0
Loans, nonaccrual, with no allowance	0	0
Loans, nonaccrual	0	270
Commercial Portfolio Segment [Member] \| Financial Asset, Not Past Due [Member]
Loans	134,095	136,462
Commercial Real Estate Portfolio Segment [Member] \| Multifamily Loan [Member]
Loans	840,726	848,558
Commercial Real Estate Portfolio Segment [Member] \| Other Loan [Member]
Loans	841,829	851,277
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied Loan 1 [Member]
Loans	247,326	263,272
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Multifamily Loan [Member]
Loans	6,798	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Other Loan [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Owner Occupied Loan 1 [Member]
Loans	95	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Multifamily Loan [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Other Loan [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Owner Occupied Loan 1 [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Multifamily Loan [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Other Loan [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Owner Occupied Loan 1 [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Past Due [Member] \| Multifamily Loan [Member]
Loans, nonaccrual, with allowance	1,184	1,190
Loans, nonaccrual, with no allowance	0	0
Loans, nonaccrual	7,982	1,190
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Past Due [Member] \| Other Loan [Member]
Loans, nonaccrual, with allowance	0	0
Loans, nonaccrual, with no allowance	0	0
Loans, nonaccrual	0	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Past Due [Member] \| Owner Occupied Loan 1 [Member]
Loans, nonaccrual, with allowance	0	0
Loans, nonaccrual, with no allowance	0	0
Loans, nonaccrual	95	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Not Past Due [Member] \| Multifamily Loan [Member]
Loans	832,744	847,368
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Not Past Due [Member] \| Other Loan [Member]
Loans	841,829	851,277
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Not Past Due [Member] \| Owner Occupied Loan 1 [Member]
Loans	247,231	263,272
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans	1,065,380	1,084,090
Residential Portfolio Segment [Member] \| Revolving Home Equity Line [Member]
Loans	33,452	36,468
Residential Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Home Equity Loan [Member]
Loans	559	0
Residential Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member] \| Revolving Home Equity Line [Member]
Loans	0	0
Residential Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Home Equity Loan [Member]
Loans	0	0
Residential Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member] \| Revolving Home Equity Line [Member]
Loans	0	0
Residential Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Home Equity Loan [Member]
Loans	0	0
Residential Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Revolving Home Equity Line [Member]
Loans	0	0
Residential Portfolio Segment [Member] \| Financial Asset, Past Due [Member] \| Home Equity Loan [Member]
Loans, nonaccrual, with allowance	0	0
Loans, nonaccrual, with no allowance	2,326	2,039
Loans, nonaccrual	2,885	2,039
Residential Portfolio Segment [Member] \| Financial Asset, Past Due [Member] \| Revolving Home Equity Line [Member]
Loans, nonaccrual, with allowance	0	0
Loans, nonaccrual, with no allowance	0	0
Loans, nonaccrual	0	0
Residential Portfolio Segment [Member] \| Financial Asset, Not Past Due [Member] \| Home Equity Loan [Member]
Loans	1,062,495	1,082,051
Residential Portfolio Segment [Member] \| Financial Asset, Not Past Due [Member] \| Revolving Home Equity Line [Member]
Loans	33,452	36,468
Consumer And Other Portfolio Segment [Member]
Loans	1,126	1,210
Consumer And Other Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Consumer And Other Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Consumer And Other Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Consumer And Other Portfolio Segment [Member] \| Financial Asset, Past Due [Member]
Loans, nonaccrual, with allowance	0	0
Loans, nonaccrual, with no allowance	0	0
Loans, nonaccrual	0	0
Consumer And Other Portfolio Segment [Member] \| Financial Asset, Not Past Due [Member]
Loans	$ 1,126	$ 1,210

Note 4 - Loans - Aging of Loans (Details) - USD ($)
$ in Thousands

Mar. 31, 2025

Dec. 31, 2024

Loans

$ 3,163,934

$ 3,221,607

Financial Asset, 30 to 59 Days Past Due [Member]

Loans

7,452

174

Financial Asset, 60 to 89 Days Past Due [Member]

Loans