Note 3 - Loans Receivable - Credit Quality Indicators by Class of Loan (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Originated current year	$ 149,107	$ 149,107		$ 242,609
Originated prior year	228,901	228,901		452,690
Originated two years prior	432,679	432,679		443,246
Originated three years prior	401,917	401,917		253,325
Originated four years prior	218,058	218,058		54,901
Originated years prior	216,667	216,667		135,114
Revolving	87,478	87,478		78,143
Loan receivable, gross	1,734,807	1,734,807		1,660,028
Originated current year, writeoffs		0		0
Originated prior year, write offs		4,384		3,018
Originated two years prior, write offs		2,132		15
Originated three years prior, write offs		1,840		52
Originated four years prior, write offs		156		11
Originated years prior, write offs		234		122
Revolving, write offs		62		104
Gross charge-offs during the period	516	8,808	$ 2,668	3,322
Originated years prior	(216,667)	(216,667)		(135,114)
Pass [Member]
Originated current year	128,507	128,507		208,412
Originated prior year	192,391	192,391		440,923
Originated two years prior	410,832	410,832		409,138
Originated three years prior	367,801	367,801		238,824
Originated four years prior	202,397	202,397		50,690
Originated years prior	208,665	208,665		130,457
Revolving	83,563	83,563		71,466
Loan receivable, gross	1,594,156	1,594,156		1,549,910
Originated years prior	(208,665)	(208,665)		(130,457)
Watch [Member]
Originated current year	10,567	10,567		11,555
Originated prior year	24,879	24,879		7,359
Originated two years prior	14,430	14,430		18,887
Originated three years prior	17,895	17,895		11,580
Originated four years prior	12,742	12,742		3,699
Originated years prior	4,199	4,199		3,010
Revolving	1,386	1,386		4,155
Loan receivable, gross	86,098	86,098		60,245
Originated years prior	(4,199)	(4,199)		(3,010)
Special Mention [Member]
Originated current year				7,286
Originated prior year				334
Originated two years prior				6,561
Originated three years prior				462
Originated four years prior				0
Originated years prior				96
Revolving				0
Loan receivable, gross				14,739
Originated years prior				(96)
Substandard [Member]
Originated current year				15,356
Originated prior year				4,074
Originated two years prior				8,660
Originated three years prior				2,459
Originated four years prior				512
Originated years prior				1,551
Revolving				2,522
Loan receivable, gross				35,134
Originated years prior				(1,551)
Loss [Member]
Originated current year	0	0
Originated prior year	0	0
Originated two years prior	0	0
Originated three years prior	0	0
Originated four years prior	0	0
Originated years prior	0	0
Revolving	3	3
Loan receivable, gross	3	3
Originated years prior	0	0
Real Estate Portfolio Segment [Member]
Loan receivable, gross	1,221,322	1,221,322		1,229,200
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member]
Originated current year	725	725		2,282
Originated prior year	10,300	10,300		102,664
Originated two years prior	126,053	126,053		119,366
Originated three years prior	118,410	118,410		71,425
Originated four years prior	67,678	67,678		14,364
Originated years prior	72,626	72,626		68,331
Revolving	0	0		0
Loan receivable, gross	395,792	395,792		378,432
Originated current year, writeoffs		0		0
Originated prior year, write offs		0		0
Originated two years prior, write offs		0		0
Originated three years prior, write offs		0		0
Originated four years prior, write offs		0		0
Originated years prior, write offs		0		0
Revolving, write offs		0		0
Gross charge-offs during the period	(0)	0	(0)	0
Originated years prior	(72,626)	(72,626)		(68,331)
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Pass [Member]
Originated current year	725	725		2,282
Originated prior year	10,300	10,300		102,389
Originated two years prior	125,483	125,483		118,028
Originated three years prior	117,096	117,096		69,229
Originated four years prior	65,822	65,822		13,882
Originated years prior	69,553	69,553		65,701
Revolving	0	0		0
Loan receivable, gross	388,979	388,979		371,511
Originated years prior	(69,553)	(69,553)		(65,701)
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Watch [Member]
Originated current year	0	0		0
Originated prior year	0	0		275
Originated two years prior	570	570		1,338
Originated three years prior	1,314	1,314		1,569
Originated four years prior	1,011	1,011		0
Originated years prior	2,170	2,170		1,295
Revolving	0	0		0
Loan receivable, gross	5,065	5,065		4,477
Originated years prior	(2,170)	(2,170)		(1,295)
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Special Mention [Member]
Originated current year	0	0		0
Originated prior year	0	0		0
Originated two years prior	0	0		0
Originated three years prior	0	0		300
Originated four years prior	0	0		0
Originated years prior	79	79		80
Revolving	0	0		0
Loan receivable, gross	79	79		380
Originated years prior	(79)	(79)		(80)
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Substandard [Member]
Originated current year	0	0		0
Originated prior year	0	0		0
Originated two years prior	0	0		0
Originated three years prior	0	0		327
Originated four years prior	845	845		482
Originated years prior	824	824		1,255
Revolving	0	0		0
Loan receivable, gross	1,669	1,669		2,064
Originated years prior	(824)	(824)		(1,255)
Real Estate Portfolio Segment [Member] | Multi-family Loan [Member]
Originated current year	15,972	15,972		52,208
Originated prior year	52,007	52,007		105,902
Originated two years prior	109,675	109,675		103,419
Originated three years prior	110,796	110,796		58,296
Originated four years prior	52,966	52,966		6,922
Originated years prior	12,397	12,397		6,347
Revolving	0	0		0
Loan receivable, gross	353,813	353,813		333,094
Originated current year, writeoffs		0		0
Originated prior year, write offs		0		0
Originated two years prior, write offs		0		0
Originated three years prior, write offs		0		0
Originated four years prior, write offs		0		0
Originated years prior, write offs		0		0
Revolving, write offs		0		0
Gross charge-offs during the period	(0)	0	(0)	0
Originated years prior	(12,397)	(12,397)		(6,347)
Real Estate Portfolio Segment [Member] | Multi-family Loan [Member] | Pass [Member]
Originated current year	7,185	7,185		52,208
Originated prior year	37,138	37,138		105,902
Originated two years prior	107,903	107,903		88,293
Originated three years prior	94,588	94,588		57,588
Originated four years prior	50,179	50,179		6,922
Originated years prior	11,417	11,417		5,356
Revolving	0	0		0
Loan receivable, gross	308,410	308,410		316,269
Originated years prior	(11,417)	(11,417)		(5,356)
Real Estate Portfolio Segment [Member] | Multi-family Loan [Member] | Watch [Member]
Originated current year	8,787	8,787		0
Originated prior year	14,869	14,869		0
Originated two years prior	1,772	1,772		15,126
Originated three years prior	16,208	16,208		708
Originated four years prior	2,787	2,787		0
Originated years prior	980	980		991
Revolving	0	0		0
Loan receivable, gross	45,403	45,403		16,825
Originated years prior	(980)	(980)		(991)
Real Estate Portfolio Segment [Member] | Multi-family Loan [Member] | Substandard [Member]
Originated current year	0	0
Originated prior year	0	0
Originated two years prior	10	10
Originated three years prior	12,063	12,063
Originated four years prior	0	0
Originated years prior	0	0
Revolving	0	0
Loan receivable, gross	12,073	12,073
Originated years prior	0	0
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Originated current year	14,399	14,399		57,256
Originated prior year	55,842	55,842		88,908
Originated two years prior	82,501	82,501		115,452
Originated three years prior	110,265	110,265		86,787
Originated four years prior	77,890	77,890		16,657
Originated years prior	35,111	35,111		22,923
Revolving	0	0		0
Loan receivable, gross	376,008	376,008		387,983
Originated current year, writeoffs		0		0
Originated prior year, write offs		0		0
Originated two years prior, write offs		0		0
Originated three years prior, write offs		0		0
Originated four years prior, write offs		0		0
Originated years prior, write offs		0		0
Revolving, write offs		0		0
Gross charge-offs during the period	(0)	0	(0)	0
Originated years prior	(35,111)	(35,111)		(22,923)
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Pass [Member]
Originated current year	13,843	13,843		52,823
Originated prior year	52,041	52,041		87,712
Originated two years prior	72,061	72,061		99,058
Originated three years prior	98,202	98,202		76,664
Originated four years prior	68,103	68,103		13,096
Originated years prior	31,619	31,619		22,425
Revolving	0	0		0
Loan receivable, gross	335,869	335,869		351,778
Originated years prior	(31,619)	(31,619)		(22,425)
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Watch [Member]
Originated current year	556	556		4,433
Originated prior year	3,801	3,801		1,168
Originated two years prior	10,430	10,430		1,340
Originated three years prior	0	0		8,829
Originated four years prior	8,522	8,522		3,561
Originated years prior	772	772		496
Revolving	0	0		0
Loan receivable, gross	24,081	24,081		19,827
Originated years prior	(772)	(772)		(496)
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Special Mention [Member]
Originated current year	0	0		0
Originated prior year	0	0		0
Originated two years prior	0	0		6,528
Originated three years prior	0	0		0
Originated four years prior	1,265	1,265		0
Originated years prior	2,720	2,720		2
Revolving	0	0		0
Loan receivable, gross	3,985	3,985		6,530
Originated years prior	(2,720)	(2,720)		(2)
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Substandard [Member]
Originated current year	8,177	8,177		0
Originated prior year	11,187	11,187		28
Originated two years prior	0	0		8,526
Originated three years prior	0	0		1,294
Originated four years prior	0	0		0
Originated years prior	16	16		0
Revolving	0	0		0
Loan receivable, gross	19,380	19,380		9,848
Originated years prior	(16)	(16)		0
Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Originated current year	30,122	30,122		49,461
Originated prior year	32,699	32,699		54,443
Originated two years prior	20,158	20,158		24,217
Originated three years prior	11,618	11,618		727
Originated four years prior	512	512		344
Originated years prior	600	600		499
Revolving	0	0		0
Loan receivable, gross	95,709	95,709		129,691
Originated current year, writeoffs		0		0
Originated prior year, write offs		3,978		0
Originated two years prior, write offs		0		0
Originated three years prior, write offs		0		0
Originated four years prior, write offs		0		0
Originated years prior, write offs		0		0
Revolving, write offs		0		0
Gross charge-offs during the period	(0)	3,978	(0)	0
Originated years prior	(600)	(600)		(499)
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Pass [Member]
Originated current year	21,753	21,753		20,772
Originated prior year	15,971	15,971		49,508
Originated two years prior	20,158	20,158		23,988
Originated three years prior	11,394	11,394		727
Originated four years prior	512	512		344
Originated years prior	559	559		464
Revolving	0	0		0
Loan receivable, gross	70,347	70,347		95,803
Originated years prior	(559)	(559)		(464)
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Watch [Member]
Originated current year	192	192		6,512
Originated prior year	5,541	5,541		4,935
Originated two years prior	0	0		229
Originated three years prior	224	224		0
Originated four years prior	0	0		0
Originated years prior	25	25		15
Revolving	0	0		0
Loan receivable, gross	5,982	5,982		11,691
Originated years prior	(25)	(25)		(15)
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Special Mention [Member]
Originated current year	206	206		7,196
Originated prior year	70	70		0
Originated two years prior	0	0		0
Originated three years prior	148	148		0
Originated four years prior	6	6		0
Originated years prior	0	0		14
Revolving	0	0		0
Loan receivable, gross	430	430		7,210
Originated years prior	0	0		(14)
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Substandard [Member]
Originated current year	0	0		14,981
Originated prior year	0	0		0
Originated two years prior	0	0		0
Originated three years prior	29	29		0
Originated four years prior	55	55		0
Originated years prior	11	11		6
Revolving	31	31		0
Loan receivable, gross	126	126		14,987
Originated years prior	(11)	(11)		(6)
Consumer Portfolio Segment [Member]
Loan receivable, gross	358,158	358,158		318,533
Consumer Portfolio Segment [Member] | Home Equity Loan [Member]
Originated current year	4,554	4,554		7,179
Originated prior year	6,169	6,169		7,169
Originated two years prior	6,564	6,564		4,668
Originated three years prior	4,311	4,311		3,122
Originated four years prior	2,786	2,786		1,331
Originated years prior	4,872	4,872		4,451
Revolving	47,704	47,704		41,483
Loan receivable, gross	76,960	76,960		69,403
Originated current year, writeoffs		0		0
Originated prior year, write offs		0		0
Originated two years prior, write offs		0		0
Originated three years prior, write offs		0		0
Originated four years prior, write offs		0		0
Originated years prior, write offs		0		10
Revolving, write offs		0		0
Gross charge-offs during the period	(0)	0	11	10
Originated years prior	(4,872)	(4,872)		(4,451)
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Pass [Member]
Originated current year	4,554	4,554		7,179
Originated prior year	6,169	6,169		7,169
Originated two years prior	6,564	6,564		4,638
Originated three years prior	4,282	4,282		3,063
Originated four years prior	2,695	2,695		1,331
Originated years prior	4,834	4,834		4,283
Revolving	47,262	47,262		41,105
Loan receivable, gross	76,360	76,360		68,768
Originated years prior	(4,834)	(4,834)		(4,283)
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Watch [Member]
Originated current year	0	0		0
Originated prior year	0	0		0
Originated two years prior	0	0		0
Originated three years prior	0	0		0
Originated four years prior	36	36		0
Originated years prior	27	27		155
Revolving	411	411		345
Loan receivable, gross	474	474		500
Originated years prior	(27)	(27)		(155)
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Substandard [Member]
Originated current year	31	31		0
Originated prior year	111	111		0
Originated two years prior	224	224		30
Originated three years prior	241	241		59
Originated four years prior	134	134		0
Originated years prior	153	153		13
Revolving	0	0		33
Loan receivable, gross	894	894		135
Originated years prior	(153)	(153)		(13)
Consumer Portfolio Segment [Member] | Automobile and Other Loan [Member]
Originated current year	58,889	58,889
Originated prior year	50,477	50,477
Originated two years prior	70,400	70,400
Originated three years prior	38,640	38,640
Originated four years prior	13,898	13,898
Originated years prior	48,378	48,378
Revolving	516	516
Loan receivable, gross	281,198	281,198		249,130
Gross charge-offs during the period	492		2,657
Originated years prior	(48,378)	(48,378)
Consumer Portfolio Segment [Member] | Automobile and Other Loan [Member] | Pass [Member]
Originated current year	57,620	57,620
Originated prior year	49,772	49,772
Originated two years prior	69,604	69,604
Originated three years prior	38,192	38,192
Originated four years prior	13,372	13,372
Originated years prior	48,000	48,000
Revolving	515	515
Loan receivable, gross	277,075	277,075
Originated years prior	(48,000)	(48,000)
Consumer Portfolio Segment [Member] | Automobile and Other Loan [Member] | Watch [Member]
Originated current year	1,032	1,032
Originated prior year	524	524
Originated two years prior	572	572
Originated three years prior	59	59
Originated four years prior	386	386
Originated years prior	225	225
Revolving	1	1
Loan receivable, gross	2,799	2,799
Originated years prior	(225)	(225)
Consumer Portfolio Segment [Member] | Automobile and Other Loan [Member] | Special Mention [Member]
Originated current year	0	0
Originated prior year	0	0
Originated two years prior	1,534	1,534
Originated three years prior	1,595	1,595
Originated four years prior	0	0
Originated years prior	0	0
Revolving	0	0
Loan receivable, gross	3,129	3,129
Originated years prior	0	0
Consumer Portfolio Segment [Member] | Automobile and Other Loan [Member] | Substandard [Member]
Originated current year	1,619	1,619
Originated prior year	263	263
Originated two years prior	5,649	5,649
Originated three years prior	2,145	2,145
Originated four years prior	614	614
Originated years prior	0	0
Revolving	2,495	2,495
Loan receivable, gross	12,785	12,785
Originated years prior	0	0
Consumer Portfolio Segment [Member] | Other Consumer [Member]
Originated current year				50,093
Originated prior year				70,698
Originated two years prior				64,713
Originated three years prior				29,479
Originated four years prior				14,828
Originated years prior				18,930
Revolving				389
Loan receivable, gross				249,130
Originated current year, writeoffs		0		0
Originated prior year, write offs		406		3,018
Originated two years prior, write offs		1,319		15
Originated three years prior, write offs		92		52
Originated four years prior, write offs		17		11
Originated years prior, write offs		234		112
Revolving, write offs		62		104
Gross charge-offs during the period		2,130		3,312
Originated years prior				(18,930)
Consumer Portfolio Segment [Member] | Other Consumer [Member] | Pass [Member]
Originated current year				49,649
Originated prior year				69,052
Originated two years prior				64,101
Originated three years prior				29,113
Originated four years prior				14,660
Originated years prior				18,593
Revolving				385
Loan receivable, gross				245,553
Originated years prior				(18,593)
Consumer Portfolio Segment [Member] | Other Consumer [Member] | Watch [Member]
Originated current year				270
Originated prior year				919
Originated two years prior				579
Originated three years prior				204
Originated four years prior				138
Originated years prior				59
Revolving				4
Loan receivable, gross				2,173
Originated years prior				(59)
Consumer Portfolio Segment [Member] | Other Consumer [Member] | Special Mention [Member]
Originated current year				90
Originated prior year				334
Originated two years prior				33
Originated three years prior				162
Originated four years prior				0
Originated years prior				0
Revolving				0
Loan receivable, gross				619
Originated years prior				0
Consumer Portfolio Segment [Member] | Other Consumer [Member] | Substandard [Member]
Originated current year				84
Originated prior year				393
Originated two years prior				0
Originated three years prior				0
Originated four years prior				30
Originated years prior				278
Revolving				0
Loan receivable, gross				785
Originated years prior				(278)
Commercial Portfolio Segment [Member]
Originated current year	24,446	24,446		24,130
Originated prior year	21,407	21,407		22,906
Originated two years prior	17,328	17,328		11,411
Originated three years prior	7,877	7,877		3,489
Originated four years prior	2,328	2,328		455
Originated years prior	42,683	42,683		13,633
Revolving	39,258	39,258		36,271
Loan receivable, gross	155,327	155,327		112,295
Originated current year, writeoffs		0		0
Originated prior year, write offs		0		0
Originated two years prior, write offs		813		0
Originated three years prior, write offs		1,748		0
Originated four years prior, write offs		139		0
Originated years prior, write offs		0		0
Revolving, write offs		0		0
Gross charge-offs during the period	24	2,700	$ (0)	0
Originated years prior	(42,683)	(42,683)		(13,633)
Commercial Portfolio Segment [Member] | Pass [Member]
Originated current year	22,827	22,827		23,499
Originated prior year	21,000	21,000		19,191
Originated two years prior	9,059	9,059		11,032
Originated three years prior	4,047	4,047		2,440
Originated four years prior	1,714	1,714		455
Originated years prior	42,683	42,683		13,635
Revolving	35,786	35,786		29,976
Loan receivable, gross	137,116	137,116		100,228
Originated years prior	(42,683)	(42,683)		(13,635)
Commercial Portfolio Segment [Member] | Watch [Member]
Originated current year	0	0		340
Originated prior year	144	144		62
Originated two years prior	1,086	1,086		275
Originated three years prior	90	90		270
Originated four years prior	0	0		0
Revolving	974	974		3,806
Loan receivable, gross	2,294	2,294		4,752
Originated years prior, net of deferred fees	0	0		(1)
Commercial Portfolio Segment [Member] | Special Mention [Member]
Originated current year	206	206
Originated prior year	70	70
Originated two years prior	1,534	1,534
Originated three years prior	1,743	1,743
Originated four years prior	1,271	1,271
Originated years prior	2,799	2,799
Revolving	0	0
Loan receivable, gross	7,623	7,623
Originated years prior	(2,799)	(2,799)
Commercial Portfolio Segment [Member] | Substandard [Member]
Originated current year	9,827	9,827		291
Originated prior year	11,561	11,561		3,653
Originated two years prior	5,883	5,883		104
Originated three years prior	14,478	14,478		779
Originated four years prior	1,648	1,648		0
Originated years prior	1,004	1,004		1
Revolving	2,526	2,526		2,489
Loan receivable, gross	46,927	46,927		7,315
Originated years prior	(1,004)	(1,004)		$ (1)
Commercial Portfolio Segment [Member] | Loss [Member]
Originated current year	0	0
Originated prior year	0	0
Originated two years prior	0	0
Originated three years prior	0	0
Originated four years prior	0	0
Originated years prior	0	0
Revolving	3	3
Loan receivable, gross	3	3
Originated years prior	$ 0	$ 0