Note 2 - Investment Securities - Summary of Unrealized Loss Positions (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Available-for-sale, less than 12 months, fair value	$ 5,419	$ 1,857
Available-for-sale, less than 12 months, unrealized loss	(74)	(45)
Available-for-sale, more than 12 months, fair value	42,954	46,218
Available-for-sale, more than 12 months, unrealized loss	(7,145)	(7,486)
Available-for-sale, fair value	48,373	48,075
Available-for-sale, unrealized loss	(7,219)	(7,531)
Collateralized Mortgage-Backed Securities [Member]
Available-for-sale, less than 12 months, fair value	0	0
Available-for-sale, less than 12 months, unrealized loss	0	0
Available-for-sale, more than 12 months, fair value	14,950	15,807
Available-for-sale, more than 12 months, unrealized loss	(3,079)	(2,981)
Available-for-sale, fair value	14,950	15,807
Available-for-sale, unrealized loss	(3,079)	(2,981)
Subordinated Debt [Member]
Available-for-sale, less than 12 months, fair value	1,159	1,857
Available-for-sale, less than 12 months, unrealized loss	(29)	(45)
Available-for-sale, more than 12 months, fair value	7,251	7,347
Available-for-sale, more than 12 months, unrealized loss	(469)	(623)
Available-for-sale, fair value	8,410	9,204
Available-for-sale, unrealized loss	(498)	(668)
Taxable Municipal Bonds [Member]
Available-for-sale, less than 12 months, fair value	0	0
Available-for-sale, less than 12 months, unrealized loss	0	0
Available-for-sale, more than 12 months, fair value	7,683	7,689
Available-for-sale, more than 12 months, unrealized loss	(1,901)	(1,908)
Available-for-sale, fair value	7,683	7,689
Available-for-sale, unrealized loss	(1,901)	(1,908)
Nontaxable Municipal Bonds [Member]
Available-for-sale, less than 12 months, fair value	4,260	0
Available-for-sale, less than 12 months, unrealized loss	(45)	0
Available-for-sale, more than 12 months, fair value	12,566	14,796
Available-for-sale, more than 12 months, unrealized loss	(1,680)	(1,957)
Available-for-sale, fair value	16,826	14,796
Available-for-sale, unrealized loss	(1,725)	(1,957)
US Government Agencies Debt Securities [Member]
Available-for-sale, less than 12 months, fair value	0	0
Available-for-sale, less than 12 months, unrealized loss	0	0
Available-for-sale, more than 12 months, fair value	504	579
Available-for-sale, more than 12 months, unrealized loss	(16)	(17)
Available-for-sale, fair value	504	579
Available-for-sale, unrealized loss	$ (16)	$ (17)

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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