Note 4 - Loans Receivable, Net - Credit Quality Indicators (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Pass	$ 130,116
Pass	150,177
Pass	101,397
Pass	45,028
Pass	40,368
Pass	104,966
Pass	62,444
Pass	634,496	$ 560,988
Current year, writen off	0
One year before gross write-offs	23
Two years before gross write-offs	33
Three years before gross write-offs	17
Four years before gross write-offs	0
Prior gross write-offs	12
Revolving gross write-offs	90
Total loans gross write-offs	175	267
Loans	634,496	560,988
Pass [Member]
Pass		439,248
Loans		439,248
Caution [Member]
Pass		105,368
Loans		105,368
Special Mention [Member]
Pass		7,125
Loans		7,125
Substandard [Member]
Pass		9,247
Loans		9,247
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Pass	36,027
Pass	35,845
Pass	16,956
Pass	4,799
Pass	3,438
Pass	2,204
Pass	5,239
Pass	104,508	112,794
Current year, writen off	0
One year before gross write-offs	0
Two years before gross write-offs	0
Three years before gross write-offs	0
Four years before gross write-offs	0
Prior gross write-offs	1
Revolving gross write-offs	0
Total loans gross write-offs	1	(0)
Loans	104,508	112,794
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass [Member]
Pass	31,811
Pass	21,125
Pass	15,431
Pass	1,518
Pass	617
Pass	1,322
Pass	5,089
Pass	76,913	91,564
Loans	76,913	91,564
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Caution [Member]
Pass	4,073
Pass	14,381
Pass	1,192
Pass	3,148
Pass	275
Pass	333
Pass	150
Pass	23,552	18,838
Loans	23,552	18,838
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Special Mention [Member]
Pass	0
Pass	29
Pass	0
Pass	0
Pass	1,072
Pass	457
Pass	0
Pass	1,558	2,014
Loans	1,558	2,014
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Substandard [Member]
Pass	143
Pass	310
Pass	333
Pass	133
Pass	1,474
Pass	92
Pass	0
Pass	2,485	378
Loans	2,485	378
Commercial Real Estate Portfolio Segment [Member] | Residential Mortgage [Member]
Pass	46,267
Pass	46,981
Pass	19,292
Pass	16,055
Pass	5,585
Pass	28,846
Pass	9,857
Pass	172,883	110,057
Current year, writen off	0
One year before gross write-offs	0
Two years before gross write-offs	0
Three years before gross write-offs	0
Four years before gross write-offs	0
Prior gross write-offs	0
Revolving gross write-offs	0
Total loans gross write-offs	0	(0)
Loans	172,883	110,057
Commercial Real Estate Portfolio Segment [Member] | Residential Mortgage [Member] | Pass [Member]
Pass	28,352
Pass	36,426
Pass	12,290
Pass	14,164
Pass	3,991
Pass	22,239
Pass	9,708
Pass	127,170	84,028
Loans	127,170	84,028
Commercial Real Estate Portfolio Segment [Member] | Residential Mortgage [Member] | Caution [Member]
Pass	15,050
Pass	10,397
Pass	5,954
Pass	1,497
Pass	1,546
Pass	4,134
Pass	149
Pass	38,727	22,373
Loans	38,727	22,373
Commercial Real Estate Portfolio Segment [Member] | Residential Mortgage [Member] | Special Mention [Member]
Pass	2,291
Pass	158
Pass	430
Pass	394
Pass	0
Pass	190
Pass	0
Pass	3,463	888
Loans	3,463	888
Commercial Real Estate Portfolio Segment [Member] | Residential Mortgage [Member] | Substandard [Member]
Pass	574
Pass	0
Pass	618
Pass	0
Pass	48
Pass	2,283
Pass	0
Pass	3,523	2,768
Loans	3,523	2,768
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Pass	29,866
Pass	54,199
Pass	54,098
Pass	22,198
Pass	30,637
Pass	71,309
Pass	2,495
Pass	264,802	252,154
Current year, writen off	0
One year before gross write-offs	0
Two years before gross write-offs	0
Three years before gross write-offs	0
Four years before gross write-offs	0
Prior gross write-offs	0
Revolving gross write-offs	0
Total loans gross write-offs	0	(0)
Loans	264,802	252,154
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Pass [Member]
Pass	12,702
Pass	48,077
Pass	49,377
Pass	16,593
Pass	17,806
Pass	52,848
Pass	2,375
Pass	199,778	196,063
Loans	199,778	196,063
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Caution [Member]
Pass	16,951
Pass	4,880
Pass	4,212
Pass	5,197
Pass	12,831
Pass	8,468
Pass	20
Pass	52,559	47,821
Loans	52,559	47,821
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Special Mention [Member]
Pass	213
Pass	900
Pass	452
Pass	408
Pass	0
Pass	5,485
Pass	100
Pass	7,558	3,271
Loans	7,558	3,271
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Substandard [Member]
Pass	0
Pass	342
Pass	57
Pass	0
Pass	0
Pass	4,508
Pass	0
Pass	4,907	4,999
Loans	4,907	4,999
Commercial and Agricultural Loans [Member]
Pass	8,953
Pass	7,144
Pass	8,487
Pass	720
Pass	371
Pass	2,487
Pass	5,124
Pass	33,286	30,648
Current year, writen off	0
One year before gross write-offs	0
Two years before gross write-offs	16
Three years before gross write-offs	0
Four years before gross write-offs	0
Prior gross write-offs	0
Revolving gross write-offs	0
Total loans gross write-offs	16	105
Loans	33,286	30,648
Commercial and Agricultural Loans [Member] | Pass [Member]
Pass	4,763
Pass	5,991
Pass	6,672
Pass	643
Pass	348
Pass	2,128
Pass	4,205
Pass	24,750	25,384
Loans	24,750	25,384
Commercial and Agricultural Loans [Member] | Caution [Member]
Pass	3,732
Pass	1,131
Pass	1,715
Pass	67
Pass	16
Pass	207
Pass	816
Pass	7,684	4,593
Loans	7,684	4,593
Commercial and Agricultural Loans [Member] | Special Mention [Member]
Pass	458
Pass	22
Pass	100
Pass	9
Pass	7
Pass	90
Pass	0
Pass	686	371
Loans	686	371
Commercial and Agricultural Loans [Member] | Substandard [Member]
Pass	0
Pass	0
Pass	0
Pass	1
Pass	0
Pass	62
Pass	103
Pass	166	300
Loans	166	300
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Pass	0
Pass	0
Pass	0
Pass	0
Pass	0
Pass	0
Pass	34,497
Pass	34,497	31,737
Current year, writen off	0
One year before gross write-offs	0
Two years before gross write-offs	0
Three years before gross write-offs	0
Four years before gross write-offs	0
Prior gross write-offs	0
Revolving gross write-offs	1
Total loans gross write-offs	1	(0)
Loans	34,497	31,737
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Pass [Member]
Pass	0
Pass	0
Pass	0
Pass	0
Pass	0
Pass	0
Pass	27,192
Pass	27,192	25,694
Loans	27,192	25,694
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Caution [Member]
Pass	0
Pass	0
Pass	0
Pass	0
Pass	0
Pass	0
Pass	6,290
Pass	6,290	5,018
Loans	6,290	5,018
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Special Mention [Member]
Pass	0
Pass	0
Pass	0
Pass	0
Pass	0
Pass	0
Pass	401
Pass	401	402
Loans	401	402
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Substandard [Member]
Pass	0
Pass	0
Pass	0
Pass	0
Pass	0
Pass	0
Pass	614
Pass	614	623
Loans	614	623
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member]
Pass	9,003
Pass	6,008
Pass	2,564
Pass	1,256
Pass	337
Pass	120
Pass	5,232
Pass	24,520	23,598
Current year, writen off	0
One year before gross write-offs	23
Two years before gross write-offs	17
Three years before gross write-offs	17
Four years before gross write-offs	0
Prior gross write-offs	11
Revolving gross write-offs	89
Total loans gross write-offs	157	162
Loans	24,520	23,598
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member] | Pass [Member]
Pass	6,543
Pass	3,874
Pass	1,580
Pass	740
Pass	190
Pass	63
Pass	4,922
Pass	17,912	16,515
Loans	17,912	16,515
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member] | Caution [Member]
Pass	2,316
Pass	1,975
Pass	911
Pass	468
Pass	137
Pass	51
Pass	295
Pass	6,153	6,725
Loans	6,153	6,725
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member] | Special Mention [Member]
Pass	77
Pass	123
Pass	0
Pass	0
Pass	0
Pass	0
Pass	6
Pass	206	179
Loans	206	179
Consumer Portfolio Segment [Member] | Other Consumer Loans [Member] | Substandard [Member]
Pass	67
Pass	36
Pass	73
Pass	48
Pass	10
Pass	6
Pass	9
Pass	249	179
Loans	$ 249	$ 179