Note 4 - Loans, Allowance for Credit Losses and Other Real Estate Owned - Risk Category of Loans by Class (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Loans	$ 831,842		$ 831,842		$ 866,602
Loans	971		971		403
Loans, Writeoff	1,541	$ 1,661	3,544	$ 3,700
Financial Asset, Not Past Due [Member]
Loans	823,972		823,972		857,250
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	4,758		4,758		6,553
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	1,561		1,561		2,008
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	580		580		388
Pass [Member]
Loans	805,379		805,379		845,629
Substandard [Member]
Loans	25,128		25,128		18,908
Doubtful [Member]
Loans	745		745		1,479
Unlikely to be Collected Financing Receivable [Member]
Loans	590		590		586
Commercial Portfolio Segment [Member]
Originated prior	24,305		24,305		20,566
Originated four years before	10,647		10,647		6,963
Originated three years before	25,517		25,517		12,601
Originated two years before	14,678		14,678		34,605
Originated one years before	16,720		16,720		22,146
Originated current year	15,496		15,496		13,112
Total Term Loans	107,363		107,363		109,993
Financing Receivable Revolving	20,906		20,906		26,557
Loans	128,269		128,269		136,550
Loans	14		14		71
Originated prior, writeoff	0		0		0
Originated four years before, writeoff	0		0		0
Originated three years before, writeoff	0		0		3
Originated two years before, writeoff	0		0		135
Originated one years before, writeoff	0		0		0
Originated current year, writeoff	0		0		0
Total term loans, writeoff	0		0		138
Financing Receivable Revolving, Writeoff	28		28		272
Loans, Writeoff	28	(0)	28	148	410
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans	127,590		127,590		136,421
Commercial Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	665		665		58
Commercial Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0		0		0
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0		0		0
Commercial Portfolio Segment [Member] | Pass [Member]
Originated prior	21,863		21,863		20,554
Originated four years before	10,647		10,647		4,471
Originated three years before	22,682		22,682		12,601
Originated two years before	14,678		14,678		31,770
Originated one years before	16,720		16,720		22,146
Originated current year	15,496		15,496		13,112
Total Term Loans	102,086		102,086		104,654
Financing Receivable Revolving	19,728		19,728		25,347
Loans	121,814		121,814		130,001
Commercial Portfolio Segment [Member] | Substandard [Member]
Originated prior	2,442		2,442		12
Originated four years before	0		0		2,492
Originated three years before	2,835		2,835		0
Originated two years before	0		0		2,835
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	5,277		5,277		5,339
Financing Receivable Revolving	1,178		1,178		1,210
Loans	6,455		6,455		6,549
Commercial Portfolio Segment [Member] | Doubtful [Member]
Originated prior	0		0		0
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	0		0		0
Financing Receivable Revolving	0		0		0
Loans	0		0		0
Commercial Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Originated prior	0		0		0
Originated four years before	0		0		0
Originated three years before	0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	0		0		0
Financing Receivable Revolving	0		0		0
Loans	0		0		0
Commercial Real Estate Portfolio Segment [Member]
Originated prior	237,182		237,182		182,981
Originated four years before	68,632		68,632		68,967
Originated three years before	65,389		65,389		70,110
Originated two years before	50,012		50,012		68,891
Originated one years before	43,965		43,965		50,899
Originated current year	23,580		23,580		45,675
Total Term Loans	488,760		488,760		487,523
Financing Receivable Revolving	0		0		0
Loans	488,760		488,760		487,523
Loans	957		957		330
Originated prior, writeoff	0		0		45
Originated four years before, writeoff	0		0		0
Originated three years before, writeoff	0		0		0
Originated two years before, writeoff	0		0		0
Originated one years before, writeoff	0		0		0
Originated current year, writeoff	0		0		0
Total term loans, writeoff	0		0		45
Financing Receivable Revolving, Writeoff	0		0		0
Loans, Writeoff	(0)	(0)	(0)		45
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans	487,803		487,803		485,476
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0		0		951
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0		0		766
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0		0		0
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Originated prior	226,096		226,096		172,925
Originated four years before	67,855		67,855		68,156
Originated three years before	65,389		65,389		69,324
Originated two years before	50,012		50,012		68,891
Originated one years before	43,965		43,965		50,899
Originated current year	23,580		23,580		45,675
Total Term Loans	476,897		476,897		475,870
Financing Receivable Revolving	0		0		0
Loans	476,897		476,897		475,870
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Originated prior	11,086		11,086		10,056
Originated four years before	777		777		811
Originated three years before	0		0		786
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	11,863		11,863		11,653
Financing Receivable Revolving	0		0		0
Loans	11,863		11,863		11,653
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Originated prior	0		0		0
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	0		0		0
Financing Receivable Revolving	0		0		0
Loans	0		0		0
Commercial Real Estate Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Originated prior	0		0		0
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	0		0		0
Financing Receivable Revolving	0		0		0
Loans	0		0		0
Residential Portfolio Segment [Member]
Originated prior	9,096		9,096		9,935
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	9,096		9,096		9,935
Financing Receivable Revolving	0		0		0
Loans	9,096		9,096		9,935
Loans	0		0		2
Originated prior, writeoff	0		0		0
Originated four years before, writeoff	0		0		0
Originated three years before, writeoff	0		0		0
Originated two years before, writeoff	0		0		0
Originated one years before, writeoff	0		0		0
Originated current year, writeoff	0		0		0
Total term loans, writeoff	0		0		0
Financing Receivable Revolving, Writeoff	0		0		0
Loans, Writeoff	(0)	(0)	(0)		0
Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans	9,037		9,037		9,933
Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	3		3		0
Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	56		56		0
Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0		0		0
Residential Portfolio Segment [Member] | Pass [Member]
Originated prior	8,731		8,731		9,606
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	8,731		8,731		9,606
Financing Receivable Revolving	0		0		0
Loans	8,731		8,731		9,606
Residential Portfolio Segment [Member] | Substandard [Member]
Originated prior	365		365		329
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	365		365		329
Financing Receivable Revolving	0		0		0
Loans	365		365		329
Residential Portfolio Segment [Member] | Doubtful [Member]
Originated prior	0		0		0
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	0		0		0
Financing Receivable Revolving	0		0		0
Loans	0		0		0
Residential Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Originated prior	0		0		0
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	0		0		0
Financing Receivable Revolving	0		0		0
Loans	0		0		0
Construction Portfolio Segment [Member]
Originated prior	0		0		0
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	0		0		0
Financing Receivable Revolving	5,064		5,064		5,063
Loans	5,064		5,064		5,063
Loans	0		0		0
Originated prior, writeoff	0		0		0
Originated four years before, writeoff	0		0		0
Originated three years before, writeoff	0		0		0
Originated two years before, writeoff	0		0		0
Originated one years before, writeoff	0		0		0
Originated current year, writeoff	0		0		0
Total term loans, writeoff	0		0		0
Financing Receivable Revolving, Writeoff	0		0		0
Loans, Writeoff	(0)	(0)	(0)		0
Construction Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans	5,064		5,064		5,063
Construction Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0		0		0
Construction Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0		0		0
Construction Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0		0		0
Construction Portfolio Segment [Member] | Pass [Member]
Originated prior	0		0		0
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	0		0		0
Financing Receivable Revolving	0		0		5,063
Loans	0		0		5,063
Construction Portfolio Segment [Member] | Substandard [Member]
Originated prior	0		0		0
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	0		0		0
Financing Receivable Revolving	5,064		5,064		0
Loans	5,064		5,064		0
Construction Portfolio Segment [Member] | Doubtful [Member]
Originated prior	0		0		0
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	0		0		0
Financing Receivable Revolving	0		0		0
Loans	0		0		0
Construction Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Originated prior	0		0		0
Originated four years before	0		0		0
Originated three years before	0		0		0
Originated two years before	0		0		0
Originated one years before	0		0		0
Originated current year	0		0		0
Total Term Loans	0		0		0
Financing Receivable Revolving	0		0		0
Loans	0		0		0
Consumer Portfolio Segment [Member]
Originated prior	11,585		11,585		6,736
Originated four years before	17,948		17,948		12,480
Originated three years before	43,409		43,409		23,541
Originated two years before	61,708		61,708		53,953
Originated one years before	33,269		33,269		73,689
Originated current year	16,109		16,109		39,153
Current	184,028		184,028		209,552
Financing Receivable Revolving	16,625		16,625		17,979
Loans	200,653		200,653		227,531
Loans	0		0		0
Originated prior, writeoff	99		179		246
Originated four years before, writeoff	104		266		161
Originated three years before, writeoff	707		1,382		843
Originated two years before, writeoff	350		1,107		2,329
Originated one years before, writeoff	198		452		3,191
Originated current year, writeoff	0		0		453
Total term loans, writeoff	1,458		3,386		7,223
Financing Receivable Revolving, Writeoff	55		130		276
Loans, Writeoff	1,513	$ 1,661	3,516	$ 3,552	7,499
Consumer Portfolio Segment [Member] | Term Loan Originated Prior [Member]
Loans	0		0		0
Consumer Portfolio Segment [Member] | Term Loans Originated Four Years Prior [Member]
Loans	0		0		0
Consumer Portfolio Segment [Member] | Term Loans Originated Three Years Prior [Member]
Loans	0		0		0
Consumer Portfolio Segment [Member] | Term Loans Originated Two Years Prior [Member]
Loans	0		0		0
Consumer Portfolio Segment [Member] | Term Loans Originated One Year Prior [Member]
Loans	0		0		0
Consumer Portfolio Segment [Member] | Term Loans Originated Current Year [Member]
Loans	0		0		0
Consumer Portfolio Segment [Member] | Total Term Loans [Member]
Loans	0		0		0
Consumer Portfolio Segment [Member] | Revolving Loans Amortized Cost Basis [Member]
Loans	0		0		0
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Originated prior	11,183		11,183		6,545
Originated four years before	17,401		17,401		12,144
Originated three years before	40,994		40,994		22,700
Originated two years before	59,913		59,913		51,055
Originated one years before	32,580		32,580		71,388
Originated current year	16,039		16,039		38,699
Current	178,110		178,110		202,531
Financing Receivable Revolving	16,368		16,368		17,826
Loans	194,478		194,478		220,357
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Originated prior	281		281		160
Originated four years before	427		427		277
Originated three years before	1,529		1,529		600
Originated two years before	1,357		1,357		2,345
Originated one years before	422		422		1,733
Originated current year	38		38		332
Current	4,054		4,054		5,447
Financing Receivable Revolving	36		36		97
Loans	4,090		4,090		5,544
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Originated prior	76		76		31
Originated four years before	100		100		51
Originated three years before	661		661		153
Originated two years before	327		327		410
Originated one years before	198		198		430
Originated current year	32		32		122
Current	1,394		1,394		1,197
Financing Receivable Revolving	111		111		45
Loans	1,505		1,505		1,242
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Originated prior	45		45		0
Originated four years before	20		20		8
Originated three years before	225		225		88
Originated two years before	111		111		143
Originated one years before	69		69		138
Originated current year	0		0		0
Current	470		470		377
Financing Receivable Revolving	110		110		11
Loans	580		580		388
Consumer Portfolio Segment [Member] | Pass [Member]
Loans	197,937		197,937		225,089
Consumer Portfolio Segment [Member] | Substandard [Member]
Loans	1,381		1,381		377
Consumer Portfolio Segment [Member] | Doubtful [Member]
Loans	745		745		1,479
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Loans	$ 590		$ 590		$ 586