Note 6 - Loans and the Allowance for Credit Losses - Aging of Modified Loans (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2026 USD ($)
Financial Asset, Not Past Due [Member]
Modified	$ 56,310
Financial Asset, 30 to 89 Days Past Due [Member]
Modified	3,687
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] \| Financial Asset, Not Past Due [Member]
Modified	18,372
Commercial Portfolio Segment [Member] \| Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Commercial Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Not Past Due [Member]
Modified	29,694
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, 30 to 89 Days Past Due [Member]
Modified	3,687
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	0
Commercial Construction Portfolio Segment [Member] \| Financial Asset, Not Past Due [Member]
Modified	8,244
Commercial Construction Portfolio Segment [Member] \| Financial Asset, 30 to 89 Days Past Due [Member]
Modified	0
Commercial Construction Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Modified	$ 0