Note 2 - Securities - Unrealized Gross Losses and Fair Value of Securities in a Continuous Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Securities available for sale, gross unrealized losses, less than twelve months	$ (1,869)	$ (44)
Securities available for sale, fair value, less than twelve months	94,085	5,507
Securities available for sale, gross unrealized losses, twelve months or longer	(36,634)	(26,177)
Securities available for sale, fair value, twelve months or longer	168,968	203,805
Securities available for sale, gross unrealized losses, total	(38,503)	(26,221)
Securities available for sale, fair value, total	263,053	209,312
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale, gross unrealized losses, less than twelve months	0	0
Securities available for sale, fair value, less than twelve months	0	0
Securities available for sale, gross unrealized losses, twelve months or longer	(18,654)	(11,896)
Securities available for sale, fair value, twelve months or longer	72,658	80,252
Securities available for sale, gross unrealized losses, total	(18,654)	(11,896)
Securities available for sale, fair value, total	72,658	80,252
US Government Agencies Debt Securities [Member]
Securities available for sale, gross unrealized losses, less than twelve months		0
Securities available for sale, fair value, less than twelve months		0
Securities available for sale, gross unrealized losses, twelve months or longer		(12)
Securities available for sale, fair value, twelve months or longer		4,116
Securities available for sale, gross unrealized losses, total		(12)
Securities available for sale, fair value, total		4,116
Corporate Issued Asset-backed Securities [Member]
Securities available for sale, gross unrealized losses, less than twelve months	(12)	0
Securities available for sale, fair value, less than twelve months	8,032	0
Securities available for sale, gross unrealized losses, twelve months or longer	0	(4)
Securities available for sale, fair value, twelve months or longer	0	958
Securities available for sale, gross unrealized losses, total	(12)	(4)
Securities available for sale, fair value, total	8,032	958
Corporate Debt Securities [Member]
Securities available for sale, gross unrealized losses, less than twelve months	(552)	(8)
Securities available for sale, fair value, less than twelve months	25,953	993
Securities available for sale, gross unrealized losses, twelve months or longer	(1,118)	(1,214)
Securities available for sale, fair value, twelve months or longer	21,435	27,570
Securities available for sale, gross unrealized losses, total	(1,670)	(1,222)
Securities available for sale, fair value, total	47,388	28,563
US Small Business Administration Securities [Member]
Securities available for sale, gross unrealized losses, less than twelve months	(8)	(5)
Securities available for sale, fair value, less than twelve months	883	643
Securities available for sale, gross unrealized losses, twelve months or longer	(6)	(13)
Securities available for sale, fair value, twelve months or longer	596	2,380
Securities available for sale, gross unrealized losses, total	(14)	(18)
Securities available for sale, fair value, total	1,479	3,023
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Securities available for sale, gross unrealized losses, less than twelve months	(1,013)	(31)
Securities available for sale, fair value, less than twelve months	32,124	3,871
Securities available for sale, gross unrealized losses, twelve months or longer	(13,183)	(10,310)
Securities available for sale, fair value, twelve months or longer	52,531	57,375
Securities available for sale, gross unrealized losses, total	(14,196)	(10,341)
Securities available for sale, fair value, total	84,655	61,246
Mortgage-Backed Securities, Issued by Private Enterprises [Member]
Securities available for sale, gross unrealized losses, less than twelve months	(284)	0
Securities available for sale, fair value, less than twelve months	27,093	0
Securities available for sale, gross unrealized losses, twelve months or longer	(3,673)	(2,728)
Securities available for sale, fair value, twelve months or longer	21,748	31,154
Securities available for sale, gross unrealized losses, total	(3,957)	(2,728)
Securities available for sale, fair value, total	$ 48,841	$ 31,154

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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