Note 6 - Loans Receivable, Net and Allowance for Credit Losses - Internal Risk Categories (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing Receivable, Year One	$ 46,220		$ 46,220		$ 93,492
Financing Receivable, Year Two	69,466		69,466		233,467
Financing Receivable, Year Three	187,097		187,097		131,246
Financing Receivable, Year Four	115,575		115,575		40,556
Financing Receivable, Year Five	37,789		37,789		23,802
Financing Receivable, Prior	74,503		74,503		67,988
Financing Receivable, Revolving	23,827		23,827		20,327
Financing Receivable, Total	554,477		554,477		625,230
Current period gross charge-offs, Year One			234		0
Current period gross charge-offs, Year Two			0		29
Current period gross charge-offs, Year Three			618		613
Current period gross charge-offs, Year Four			55		231
Current period gross charge-offs, Year Five			0		0
Current period gross charge-offs, Prior			187		2
Current period gross charge-offs, Revolving			0		0
Current period gross charge-offs, Total	642	$ 605	1,094	$ 836	875
Current period gross charge-offs			618		613
Pass [Member]
Financing Receivable, Year One	46,220		46,220		93,492
Financing Receivable, Year Two	69,466		69,466		233,467
Financing Receivable, Year Three	185,244		185,244		129,300
Financing Receivable, Year Four	113,122		113,122		40,556
Financing Receivable, Year Five	37,165		37,165		22,509
Financing Receivable, Prior	74,503		74,503		65,518
Financing Receivable, Revolving	23,643		23,643		20,327
Financing Receivable, Total	549,363		549,363		619,521
Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	333		333		0
Financing Receivable, Year Four	379		379		0
Financing Receivable, Year Five	591		591		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	139		139		0
Financing Receivable, Total	1,442		1,442		0
Substandard [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	1,520		1,520		1,946
Financing Receivable, Year Four	2,074		2,074		0
Financing Receivable, Year Five	33		33		1,293
Financing Receivable, Prior	0		0		2,470
Financing Receivable, Revolving	45		45		0
Financing Receivable, Total	3,672		3,672		5,709
Doubtful [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Residential Portfolio Segment [Member] \| One-to-four Family Residential Owner Occupied Loans [Member]
Financing Receivable, Year One	5,782		5,782		6,044
Financing Receivable, Year Two	5,525		5,525		8,574
Financing Receivable, Year Three	5,222		5,222		3,840
Financing Receivable, Year Four	3,749		3,749		1,850
Financing Receivable, Year Five	1,648		1,648		571
Financing Receivable, Prior	2,435		2,435		2,006
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	24,361		24,361		22,885
Current period gross charge-offs, Year One			0		0
Current period gross charge-offs, Year Two			0		0
Current period gross charge-offs, Year Three			0		0
Current period gross charge-offs, Year Four			0		0
Current period gross charge-offs, Year Five			0		0
Current period gross charge-offs, Prior			0		0
Current period gross charge-offs, Revolving			0		0
Current period gross charge-offs, Total			0		0
Current period gross charge-offs			0		0
Residential Portfolio Segment [Member] \| One-to-four Family Residential Owner Occupied Loans [Member] \| Pass [Member]
Financing Receivable, Year One	5,782		5,782		6,044
Financing Receivable, Year Two	5,525		5,525		8,574
Financing Receivable, Year Three	5,222		5,222		3,840
Financing Receivable, Year Four	3,749		3,749		1,850
Financing Receivable, Year Five	1,648		1,648		571
Financing Receivable, Prior	2,435		2,435		2,006
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	24,361		24,361		22,885
Residential Portfolio Segment [Member] \| One-to-four Family Residential Owner Occupied Loans [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Residential Portfolio Segment [Member] \| One-to-four Family Residential Owner Occupied Loans [Member] \| Substandard [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Residential Portfolio Segment [Member] \| One-to-four Family Residential Owner Occupied Loans [Member] \| Doubtful [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Residential Portfolio Segment [Member] \| Multi-family (Five Or More) Residential Loans [Member]
Financing Receivable, Year One	5,313		5,313		1,566
Financing Receivable, Year Two	928		928		15,542
Financing Receivable, Year Three	14,280		14,280		13,853
Financing Receivable, Year Four	13,245		13,245		4,483
Financing Receivable, Year Five	4,096		4,096		2,386
Financing Receivable, Prior	9,601		9,601		8,850
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	47,463		47,463		46,680
Current period gross charge-offs, Year One			0		0
Current period gross charge-offs, Year Two			0		0
Current period gross charge-offs, Year Three			0		0
Current period gross charge-offs, Year Four			0		0
Current period gross charge-offs, Year Five			0		0
Current period gross charge-offs, Prior			0		2
Current period gross charge-offs, Revolving			0		0
Current period gross charge-offs, Total			0		2
Current period gross charge-offs			0		0
Residential Portfolio Segment [Member] \| Multi-family (Five Or More) Residential Loans [Member] \| Pass [Member]
Financing Receivable, Year One	5,313		5,313		1,566
Financing Receivable, Year Two	928		928		15,542
Financing Receivable, Year Three	14,280		14,280		13,853
Financing Receivable, Year Four	13,245		13,245		4,483
Financing Receivable, Year Five	4,096		4,096		2,386
Financing Receivable, Prior	9,601		9,601		8,850
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	47,463		47,463		46,680
Residential Portfolio Segment [Member] \| Multi-family (Five Or More) Residential Loans [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Residential Portfolio Segment [Member] \| Multi-family (Five Or More) Residential Loans [Member] \| Substandard [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Residential Portfolio Segment [Member] \| Multi-family (Five Or More) Residential Loans [Member] \| Doubtful [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Residential Portfolio Segment [Member] \| One-to-four Family Residential Non-owner Occupied Loans [Member]
Financing Receivable, Year One	1,328		1,328		2,195
Financing Receivable, Year Two	1,926		1,926		7,153
Financing Receivable, Year Three	6,093		6,093		12,362
Financing Receivable, Year Four	11,623		11,623		3,268
Financing Receivable, Year Five	1,983		1,983		1,026
Financing Receivable, Prior	11,301		11,301		14,451
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	34,254		34,254		40,455
Current period gross charge-offs, Year One			0		0
Current period gross charge-offs, Year Two			0		0
Current period gross charge-offs, Year Three			0		0
Current period gross charge-offs, Year Four			0		0
Current period gross charge-offs, Year Five			0		0
Current period gross charge-offs, Prior			0		0
Current period gross charge-offs, Revolving			0		0
Current period gross charge-offs, Total			0		0
Current period gross charge-offs			0		0
Residential Portfolio Segment [Member] \| One-to-four Family Residential Non-owner Occupied Loans [Member] \| Pass [Member]
Financing Receivable, Year One	1,328		1,328		2,195
Financing Receivable, Year Two	1,926		1,926		7,153
Financing Receivable, Year Three	6,093		6,093		12,362
Financing Receivable, Year Four	11,623		11,623		3,268
Financing Receivable, Year Five	1,983		1,983		1,026
Financing Receivable, Prior	11,301		11,301		14,451
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	34,254		34,254		40,455
Residential Portfolio Segment [Member] \| One-to-four Family Residential Non-owner Occupied Loans [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Residential Portfolio Segment [Member] \| One-to-four Family Residential Non-owner Occupied Loans [Member] \| Substandard [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Residential Portfolio Segment [Member] \| One-to-four Family Residential Non-owner Occupied Loans [Member] \| Doubtful [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Real Estate Portfolio Segment [Member] \| One-to-four Family Residential Owner Occupied Loans [Member]
Current period gross charge-offs, Total	(0)	(0)	(0)	(0)
Real Estate Portfolio Segment [Member] \| Multi-family (Five Or More) Residential Loans [Member]
Current period gross charge-offs, Total	(0)	(0)	(0)	(0)
Real Estate Portfolio Segment [Member] \| Home Equity Loan [Member]
Financing Receivable, Year One	0		0		1,062
Financing Receivable, Year Two	377		377		35
Financing Receivable, Year Three	0		0		122
Financing Receivable, Year Four	116		116		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	177		177		205
Financing Receivable, Revolving	4,837		4,837		4,738
Financing Receivable, Total	5,507		5,507		6,162
Current period gross charge-offs, Year One			0		0
Current period gross charge-offs, Year Two			0		0
Current period gross charge-offs, Year Three			0		0
Current period gross charge-offs, Year Four			0		0
Current period gross charge-offs, Year Five			0		0
Current period gross charge-offs, Prior			0		0
Current period gross charge-offs, Revolving			0		0
Current period gross charge-offs, Total	(0)	(0)	0	(0)	0
Current period gross charge-offs			0		0
Real Estate Portfolio Segment [Member] \| Home Equity Loan [Member] \| Pass [Member]
Financing Receivable, Year One	0		0		1,062
Financing Receivable, Year Two	377		377		35
Financing Receivable, Year Three	0		0		122
Financing Receivable, Year Four	116		116		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	177		177		205
Financing Receivable, Revolving	4,837		4,837		4,738
Financing Receivable, Total	5,507		5,507		6,162
Real Estate Portfolio Segment [Member] \| Home Equity Loan [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Real Estate Portfolio Segment [Member] \| Home Equity Loan [Member] \| Substandard [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Real Estate Portfolio Segment [Member] \| Home Equity Loan [Member] \| Doubtful [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Real Estate Portfolio Segment [Member] \| One-to-four Family Residential Non-owner Occupied Loans [Member]
Current period gross charge-offs, Total	(0)	(0)	(0)	(0)
Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loans [Member]
Financing Receivable, Year One	14,004		14,004		61,338
Financing Receivable, Year Two	46,727		46,727		121,006
Financing Receivable, Year Three	101,276		101,276		64,684
Financing Receivable, Year Four	58,853		58,853		26,631
Financing Receivable, Year Five	25,952		25,952		16,622
Financing Receivable, Prior	49,049		49,049		38,897
Financing Receivable, Revolving	4,321		4,321		1,996
Financing Receivable, Total	300,182		300,182		331,174
Current period gross charge-offs, Year One			0		0
Current period gross charge-offs, Year Two			0		0
Current period gross charge-offs, Year Three			0		0
Current period gross charge-offs, Year Four			0		134
Current period gross charge-offs, Year Five			0		0
Current period gross charge-offs, Prior			0		0
Current period gross charge-offs, Revolving			0		0
Current period gross charge-offs, Total			0		134
Current period gross charge-offs			0		0
Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loans [Member] \| Pass [Member]
Financing Receivable, Year One	14,004		14,004		61,338
Financing Receivable, Year Two	46,727		46,727		121,006
Financing Receivable, Year Three	100,710		100,710		64,684
Financing Receivable, Year Four	58,853		58,853		26,631
Financing Receivable, Year Five	25,952		25,952		16,571
Financing Receivable, Prior	49,049		49,049		38,897
Financing Receivable, Revolving	4,321		4,321		1,996
Financing Receivable, Total	299,616		299,616		331,123
Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loans [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	333		333		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	333		333		0
Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loans [Member] \| Substandard [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	233		233		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		51
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	233		233		51
Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loans [Member] \| Doubtful [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Financing Receivable, Year One	2,862		2,862		14,777
Financing Receivable, Year Two	9,527		9,527		11,244
Financing Receivable, Year Three	5,916		5,916		7,417
Financing Receivable, Year Four	5,573		5,573		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		2,147
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	23,878		23,878		35,585
Current period gross charge-offs, Year One			0		0
Current period gross charge-offs, Year Two			0		0
Current period gross charge-offs, Year Three			0		0
Current period gross charge-offs, Year Four			0		0
Current period gross charge-offs, Year Five			0		0
Current period gross charge-offs, Prior			187		0
Current period gross charge-offs, Revolving			0		0
Current period gross charge-offs, Total	187	$ (0)	187	$ (0)	0
Current period gross charge-offs			0		0
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Pass [Member]
Financing Receivable, Year One	2,862		2,862		14,777
Financing Receivable, Year Two	9,527		9,527		11,244
Financing Receivable, Year Three	5,916		5,916		7,417
Financing Receivable, Year Four	5,573		5,573		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	23,878		23,878		33,438
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Substandard [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		2,147
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		2,147
Real Estate Portfolio Segment [Member] \| Construction Loans [Member] \| Doubtful [Member]
Financing Receivable, Year One	0		0		0
Financing Receivable, Year Two	0		0		0
Financing Receivable, Year Three	0		0		0
Financing Receivable, Year Four	0		0		0
Financing Receivable, Year Five	0		0		0
Financing Receivable, Prior	0		0		0
Financing Receivable, Revolving	0		0		0
Financing Receivable, Total	0		0		0
Commercial Portfolio Segment [Member]
Financing Receivable, Year One	16,882		16,882
Financing Receivable, Year Two	4,456		4,456
Financing Receivable, Year Three	54,310		54,310
Financing Receivable, Year Four	22,416		22,416
Financing Receivable, Year Five	4,110		4,110
Financing Receivable, Prior	1,940		1,940
Financing Receivable, Revolving	14,669		14,669
Financing Receivable, Total	118,783		118,783
Current period gross charge-offs, Year One			234
Current period gross charge-offs, Year Two			0
Current period gross charge-offs, Year Three			618
Current period gross charge-offs, Year Four			55
Current period gross charge-offs, Year Five			0
Current period gross charge-offs, Prior			0
Current period gross charge-offs, Revolving			0
Current period gross charge-offs, Total			907
Current period gross charge-offs			618
Commercial Portfolio Segment [Member] \| Pass [Member]
Financing Receivable, Year One	16,882		16,882
Financing Receivable, Year Two	4,456		4,456
Financing Receivable, Year Three	53,023		53,023
Financing Receivable, Year Four	19,963		19,963
Financing Receivable, Year Five	3,486		3,486
Financing Receivable, Prior	1,940		1,940
Financing Receivable, Revolving	14,485		14,485
Financing Receivable, Total	114,235		114,235
Commercial Portfolio Segment [Member] \| Special Mention [Member]
Financing Receivable, Year One	0		0
Financing Receivable, Year Two	0		0
Financing Receivable, Year Three	0		0
Financing Receivable, Year Four	379		379
Financing Receivable, Year Five	591		591
Financing Receivable, Prior	0		0
Financing Receivable, Revolving	139		139
Financing Receivable, Total	1,109		1,109
Commercial Portfolio Segment [Member] \| Substandard [Member]
Financing Receivable, Year One	0		0
Financing Receivable, Year Two	0		0
Financing Receivable, Year Three	1,287		1,287
Financing Receivable, Year Four	2,074		2,074
Financing Receivable, Year Five	33		33
Financing Receivable, Prior	0		0
Financing Receivable, Revolving	45		45
Financing Receivable, Total	3,439		3,439
Commercial Portfolio Segment [Member] \| Doubtful [Member]
Financing Receivable, Year One	0		0
Financing Receivable, Year Two	0		0
Financing Receivable, Year Three	0		0
Financing Receivable, Year Four	0		0
Financing Receivable, Year Five	0		0
Financing Receivable, Prior	0		0
Financing Receivable, Revolving	0		0
Financing Receivable, Total	0		0
Commercial Portfolio Segment [Member] \| Commercial Loan [Member]
Financing Receivable, Year One					20,793
Financing Receivable, Year Two					69,913
Financing Receivable, Year Three					28,967
Financing Receivable, Year Four					4,324
Financing Receivable, Year Five					3,197
Financing Receivable, Prior					1,433
Financing Receivable, Revolving					13,593
Financing Receivable, Total					142,220
Current period gross charge-offs, Year One					0
Current period gross charge-offs, Year Two					29
Current period gross charge-offs, Year Three					613
Current period gross charge-offs, Year Four					97
Current period gross charge-offs, Year Five					0
Current period gross charge-offs, Prior					0
Current period gross charge-offs, Revolving					0
Current period gross charge-offs, Total					739
Current period gross charge-offs					613
Commercial Portfolio Segment [Member] \| Commercial Loan [Member] \| Pass [Member]
Financing Receivable, Year One					20,793
Financing Receivable, Year Two					69,913
Financing Receivable, Year Three					27,022
Financing Receivable, Year Four					4,324
Financing Receivable, Year Five					1,955
Financing Receivable, Prior					1,109
Financing Receivable, Revolving					13,593
Financing Receivable, Total					138,709
Commercial Portfolio Segment [Member] \| Commercial Loan [Member] \| Special Mention [Member]
Financing Receivable, Year One					0
Financing Receivable, Year Two					0
Financing Receivable, Year Three					0
Financing Receivable, Year Four					0
Financing Receivable, Year Five					0
Financing Receivable, Prior					0
Financing Receivable, Revolving					0
Financing Receivable, Total					0
Commercial Portfolio Segment [Member] \| Commercial Loan [Member] \| Substandard [Member]
Financing Receivable, Year One					0
Financing Receivable, Year Two					0
Financing Receivable, Year Three					1,946
Financing Receivable, Year Four					0
Financing Receivable, Year Five					1,242
Financing Receivable, Prior					323
Financing Receivable, Revolving					0
Financing Receivable, Total					3,511
Commercial Portfolio Segment [Member] \| Commercial Loan [Member] \| Doubtful [Member]
Financing Receivable, Year One					0
Financing Receivable, Year Two					0
Financing Receivable, Year Three					0
Financing Receivable, Year Four					0
Financing Receivable, Year Five					0
Financing Receivable, Prior					0
Financing Receivable, Revolving					0
Financing Receivable, Total					0
Consumer Portfolio Segment [Member]
Financing Receivable, Year One	49		49
Financing Receivable, Year Two	0		0
Financing Receivable, Year Three	0		0
Financing Receivable, Year Four	0		0
Financing Receivable, Year Five	0		0
Financing Receivable, Prior	0		0
Financing Receivable, Revolving	0		0

Note 6 - Loans Receivable, Net and Allowance for Credit Losses - Internal Risk Categories (Details) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

12 Months Ended

Sep. 30, 2024

Sep. 30, 2023

Sep. 30, 2024

Sep. 30, 2023

Dec. 31, 2023

Financing Receivable, Year One

$ 46,220

$ 93,492