Note C - Loans - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Loan receivable, gross	$ 238,339	$ 237,878
A, B, or C [Member]
Loan receivable, gross		235,001
S [Member]
Loan receivable, gross		77
D [Member]
Loan receivable, gross		1,297
E [Member]
Loan receivable, gross		1,503
F [Member]
Loan receivable, gross		0
Real Estate, Residential [Member]
Originated, Current Fiscal Year	11,865
Originated, Fiscal Year before Current Fiscal Year	17,053
A, B, or C	12,280
Originated, Three Years before Current Fiscal Year	4,740
Originated, Four Years before Current Fiscal Year	5,478
Originated, More than Five Years before Current Fiscal Year	18,332
Financing Receivable, Revolving	4,147
Financing Receivable, Revolving, Converted to Term Loan	401
Loan receivable, gross	74,296	67,512
Real Estate, Residential [Member] | A, B, or C [Member]
Originated, Current Fiscal Year	11,865
Originated, Fiscal Year before Current Fiscal Year	17,053
A, B, or C	12,158
Originated, Three Years before Current Fiscal Year	4,695
Originated, Four Years before Current Fiscal Year	5,451
Originated, More than Five Years before Current Fiscal Year	17,502
Financing Receivable, Revolving	4,147
Financing Receivable, Revolving, Converted to Term Loan	401
Loan receivable, gross	73,272	66,490
Real Estate, Residential [Member] | S [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	66
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	66	77
Real Estate, Residential [Member] | D [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	122
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	623
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	745	822
Real Estate, Residential [Member] | E [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	45
Originated, Four Years before Current Fiscal Year	27
Originated, More than Five Years before Current Fiscal Year	141
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	213	123
Real Estate, Residential [Member] | F [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	0
Real Estate, Construction [Member]
Originated, Current Fiscal Year	1,069
Originated, Fiscal Year before Current Fiscal Year	2,119
A, B, or C	2,133
Originated, Three Years before Current Fiscal Year	1,466
Originated, Four Years before Current Fiscal Year	38
Originated, More than Five Years before Current Fiscal Year	3,966
Financing Receivable, Revolving	16,562
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	27,353	30,146
Real Estate, Construction [Member] | A, B, or C [Member]
Originated, Current Fiscal Year	1,069
Originated, Fiscal Year before Current Fiscal Year	2,119
A, B, or C	2,133
Originated, Three Years before Current Fiscal Year	1,379
Originated, Four Years before Current Fiscal Year	38
Originated, More than Five Years before Current Fiscal Year	3,966
Financing Receivable, Revolving	12,827
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	23,531	30,115
Real Estate, Construction [Member] | S [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	3,735
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	3,735	0
Real Estate, Construction [Member] | D [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	87
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	87	2
Real Estate, Construction [Member] | E [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	29
Real Estate, Construction [Member] | F [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	0
Real Estate, Nonresidential [Member]
Originated, Current Fiscal Year	12,387
Originated, Fiscal Year before Current Fiscal Year	20,951
A, B, or C	11,056
Originated, Three Years before Current Fiscal Year	15,008
Originated, Four Years before Current Fiscal Year	5,497
Originated, More than Five Years before Current Fiscal Year	34,428
Financing Receivable, Revolving	14,959
Financing Receivable, Revolving, Converted to Term Loan	728
Loan receivable, gross	115,014	122,233
Real Estate, Nonresidential [Member] | A, B, or C [Member]
Originated, Current Fiscal Year	12,387
Originated, Fiscal Year before Current Fiscal Year	20,951
A, B, or C	11,056
Originated, Three Years before Current Fiscal Year	15,008
Originated, Four Years before Current Fiscal Year	5,497
Originated, More than Five Years before Current Fiscal Year	34,330
Financing Receivable, Revolving	14,959
Financing Receivable, Revolving, Converted to Term Loan	728
Loan receivable, gross	114,916	120,423
Real Estate, Nonresidential [Member] | S [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	0
Real Estate, Nonresidential [Member] | D [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	98
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	98	466
Real Estate, Nonresidential [Member] | E [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	1,344
Real Estate, Nonresidential [Member] | F [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	0
Commercial And Industrial Loan [Member]
Originated, Current Fiscal Year	850
Originated, Fiscal Year before Current Fiscal Year	1,008
A, B, or C	831
Originated, Three Years before Current Fiscal Year	263
Originated, Four Years before Current Fiscal Year	2,742
Originated, More than Five Years before Current Fiscal Year	39
Financing Receivable, Revolving	6,763
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	12,496	10,497
Commercial And Industrial Loan [Member] | A, B, or C [Member]
Originated, Current Fiscal Year	850
Originated, Fiscal Year before Current Fiscal Year	1,008
A, B, or C	831
Originated, Three Years before Current Fiscal Year	263
Originated, Four Years before Current Fiscal Year	2,742
Originated, More than Five Years before Current Fiscal Year	39
Financing Receivable, Revolving	6,763
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	12,496	10,497
Commercial And Industrial Loan [Member] | S [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	0
Commercial And Industrial Loan [Member] | D [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	0
Commercial And Industrial Loan [Member] | E [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	0
Commercial And Industrial Loan [Member] | F [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	0
Other Loan [Member]
Originated, Current Fiscal Year	5,353
Originated, Fiscal Year before Current Fiscal Year	1,423
A, B, or C	841
Originated, Three Years before Current Fiscal Year	439
Originated, Four Years before Current Fiscal Year	252
Originated, More than Five Years before Current Fiscal Year	307
Financing Receivable, Revolving	513
Financing Receivable, Revolving, Converted to Term Loan	52
Loan receivable, gross	9,180	7,490
Other Loan [Member] | A, B, or C [Member]
Originated, Current Fiscal Year	5,346
Originated, Fiscal Year before Current Fiscal Year	1,417
A, B, or C	841
Originated, Three Years before Current Fiscal Year	439
Originated, Four Years before Current Fiscal Year	234
Originated, More than Five Years before Current Fiscal Year	304
Financing Receivable, Revolving	508
Financing Receivable, Revolving, Converted to Term Loan	52
Loan receivable, gross	9,141	7,476
Other Loan [Member] | S [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	0
Other Loan [Member] | D [Member]
Originated, Current Fiscal Year	7
Originated, Fiscal Year before Current Fiscal Year	6
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	18
Originated, More than Five Years before Current Fiscal Year	3
Financing Receivable, Revolving	5
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	39	7
Other Loan [Member] | E [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	0	7
Other Loan [Member] | F [Member]
Originated, Current Fiscal Year	0
Originated, Fiscal Year before Current Fiscal Year	0
A, B, or C	0
Originated, Three Years before Current Fiscal Year	0
Originated, Four Years before Current Fiscal Year	0
Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, Revolving, Converted to Term Loan	0
Loan receivable, gross	$ 0	$ 0