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Note 2 - Securities - Summary of Amortized Costs and Fair Values of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Amortized cost, available for sale securities	$ 181,007	$ 185,917
Gross unrealized gains, available for sale securities	66	62
Gross unrealized losses, available for sale securities	(20,097)	(22,132)
Fair value, available for sale securities	160,976	163,847
Securities available for sale, AFS	0	0
Amortized cost, held to maturity	108,379	109,835
Gross unrealized gains, held to maturity securities	5	8
Gross unrealized losses, held to maturity securities	(9,439)	(10,969)
Fair value, held to maturity securities	98,945	98,874
Securities available for sale, HTM	(87)	(94)	$ (106)
Amortized cost	289,386	295,752
Gross unrealized gains	71	70
Gross unrealized losses	(29,536)	(33,101)
Total securities, fair value	259,921	262,721
Total securities, allowance for credit loss	(87)	(94)
US Treasury Securities [Member]
Amortized cost, available for sale securities	12,486	12,483
Gross unrealized gains, available for sale securities	0	0
Gross unrealized losses, available for sale securities	(646)	(795)
Fair value, available for sale securities	11,840	11,688
Securities available for sale, AFS	0	0
Amortized cost, held to maturity	9,696	9,632
Gross unrealized gains, held to maturity securities	0	0
Gross unrealized losses, held to maturity securities	(81)	(125)
Fair value, held to maturity securities	9,615	9,507
Securities available for sale, HTM	0	0	0
US Agency and Mortgage-backed Securities [Member]
Amortized cost, available for sale securities	105,963	110,480
Gross unrealized gains, available for sale securities	62	57
Gross unrealized losses, available for sale securities	(10,954)	(12,498)
Fair value, available for sale securities	95,071	98,039
Securities available for sale, AFS	0	0
Amortized cost, held to maturity	85,038	86,554
Gross unrealized gains, held to maturity securities	0	0
Gross unrealized losses, held to maturity securities	(7,874)	(9,282)
Fair value, held to maturity securities	77,164	77,272
Securities available for sale, HTM	0	0	0
US States and Political Subdivisions Debt Securities [Member]
Amortized cost, available for sale securities	62,558	62,954
Gross unrealized gains, available for sale securities	4	5
Gross unrealized losses, available for sale securities	(8,497)	(8,839)
Fair value, available for sale securities	54,065	54,120
Securities available for sale, AFS	0	0
Amortized cost, held to maturity	10,645	10,649
Gross unrealized gains, held to maturity securities	5	8
Gross unrealized losses, held to maturity securities	(1,064)	(1,112)
Fair value, held to maturity securities	9,586	9,545
Securities available for sale, HTM	0	0	0
Corporate Debt Securities [Member]
Amortized cost, held to maturity	3,000	3,000
Gross unrealized gains, held to maturity securities	0	0
Gross unrealized losses, held to maturity securities	(420)	(450)
Fair value, held to maturity securities	2,580	2,550
Securities available for sale, HTM	$ (87)	$ (94)	$ (106)

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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-5A

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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