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Note 2 - Securities - Unrealized Gross Losses and Fair Value of Securities in a Continuous Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Securities available for sale, gross unrealized losses, less than twelve months	$ (101)	$ (44)
Securities available for sale, fair value, less than twelve months	17,486	5,507
Securities available for sale, gross unrealized losses, twelve months or longer	(27,231)	(26,177)
Securities available for sale, fair value, twelve months or longer	199,444	203,805
Securities available for sale, gross unrealized losses, total	(27,332)	(26,221)
Securities available for sale, fair value, total	216,930	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	(12,359)	(11,896)
Securities available for sale, fair value, twelve months or longer	79,565	80,252
Securities available for sale, gross unrealized losses, total	(12,359)	(11,896)
Securities available for sale, fair value, total	79,565	80,252
US Government Agencies Debt Securities [Member]
Securities available for sale, gross unrealized losses, less than twelve months	(24)	0
Securities available for sale, fair value, less than twelve months	2,556	0
Securities available for sale, gross unrealized losses, twelve months or longer	(12)	(12)
Securities available for sale, fair value, twelve months or longer	6,222	4,116
Securities available for sale, gross unrealized losses, total	(36)	(12)
Securities available for sale, fair value, total	8,778	4,116
Corporate Issued Asset-backed 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	(3)	(4)
Securities available for sale, fair value, twelve months or longer	1,666	958
Securities available for sale, gross unrealized losses, total	(3)	(4)
Securities available for sale, fair value, total	1,666	958
Corporate Debt Securities [Member]
Securities available for sale, gross unrealized losses, less than twelve months	(2)	(8)
Securities available for sale, fair value, less than twelve months	1,498	993
Securities available for sale, gross unrealized losses, twelve months or longer	(1,451)	(1,214)
Securities available for sale, fair value, twelve months or longer	24,077	27,570
Securities available for sale, gross unrealized losses, total	(1,453)	(1,222)
Securities available for sale, fair value, total	25,575	28,563
US Small Business Administration Securities [Member]
Securities available for sale, gross unrealized losses, less than twelve months	(3)	(5)
Securities available for sale, fair value, less than twelve months	639	643
Securities available for sale, gross unrealized losses, twelve months or longer	(9)	(13)
Securities available for sale, fair value, twelve months or longer	1,929	2,380
Securities available for sale, gross unrealized losses, total	(12)	(18)
Securities available for sale, fair value, total	2,568	3,023
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Securities available for sale, gross unrealized losses, less than twelve months	(72)	(31)
Securities available for sale, fair value, less than twelve months	12,793	3,871
Securities available for sale, gross unrealized losses, twelve months or longer	(10,590)	(10,310)
Securities available for sale, fair value, twelve months or longer	55,300	57,375
Securities available for sale, gross unrealized losses, total	(10,662)	(10,341)
Securities available for sale, fair value, total	68,093	61,246
Mortgage-Backed Securities, Issued by Private Enterprises [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	(2,807)	(2,728)
Securities available for sale, fair value, twelve months or longer	30,685	31,154
Securities available for sale, gross unrealized losses, total	(2,807)	(2,728)
Securities available for sale, fair value, total	$ 30,685	$ 31,154

X

- Definition

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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