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Note 3 - Loans Receivable - Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Loans receivable	$ 1,714,836		$ 1,714,836		$ 1,680,576
Originated current year	268,836		268,836		223,353
Originated one years before	203,030		203,030		422,359
Originated two years before	375,265		375,265		399,336
Originated three years before	347,857		347,857		235,390
Originated four years before	210,868		210,868		169,655
Originated five years before	284,154		284,154		210,260
Revolving	24,826		24,826		20,223
Gross charge-offs, current year			0
Gross charge-offs, one year before			0
Gross charge-offs, two years before			0
Gross charge-offs, three years before			0
Gross charge-offs, four years before			0
Gross charge-offs, five years before			0
Gross charge-offs, revolving			42
Gross charge-offs, total	17	$ 14	42	$ 29
Residential Portfolio Segment [Member] | One to Four Family [Member]
Loans receivable	506,758		506,758		516,128
Originated current year	25,541		25,541		42,526
Originated one years before	30,856		30,856		173,855
Originated two years before	163,984		163,984		147,808
Originated three years before	150,999		150,999		41,704
Originated four years before	38,731		38,731		26,395
Originated five years before	95,362		95,362		83,229
Revolving	1,285		1,285		611
Gross charge-offs, total	(0)	(0)	(0)	3
Residential Portfolio Segment [Member] | Multifamily [Member]
Loans receivable	769,325		769,325		741,428
Originated current year	177,523		177,523		81,119
Originated one years before	64,069		64,069		138,414
Originated two years before	114,833		114,833		196,939
Originated three years before	149,928		149,928		125,252
Originated four years before	116,879		116,879		108,779
Originated five years before	145,274		145,274		90,155
Revolving	819		819		770
Gross charge-offs, total	(0)	(0)	(0)	(0)
Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Loans receivable	13,382		13,382		13,188
Originated current year	515		515		379
Originated one years before	359		359		478
Originated two years before	375		375		1,594
Originated three years before	1,544		1,544		163
Originated four years before	81		81		91
Originated five years before	148		148		226
Revolving	10,360		10,360		10,257
Gross charge-offs, total	(0)	(0)	(0)	(0)
Construction and Land Portfolio Segment [Member]
Loans receivable	69,152		69,152		61,427
Originated current year	1,437		1,437		23,029
Originated one years before	50,375		50,375		25,384
Originated two years before	17,185		17,185		143
Originated three years before	140		140		9,144
Originated four years before	0		0		1,501
Originated five years before	15		15		2,226
Revolving	0		0		0
Gross charge-offs, total	(0)	(0)	(0)	(0)
Commercial Real Estate Portfolio Segment [Member]
Loans receivable	323,613		323,613		313,494
Originated current year	59,994		59,994		75,352
Originated one years before	56,789		56,789		67,217
Originated two years before	62,358		62,358		51,582
Originated three years before	44,360		44,360		58,574
Originated four years before	54,798		54,798		30,827
Originated five years before	41,976		41,976		29,289
Revolving	3,338		3,338		653
Gross charge-offs, total	(0)	(0)	(0)	(0)
Consumer Portfolio Segment [Member]
Loans receivable	938		938		825
Originated current year	100		100		0
Originated one years before	0		0		0
Originated two years before	0		0		0
Originated three years before	0		0		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	838		838		825
Gross charge-offs, total	17	14	42	26
Commercial Portfolio Segment [Member]
Loans receivable	31,668		31,668		34,086
Originated current year	3,726		3,726		948
Originated one years before	582		582		17,011
Originated two years before	16,530		16,530		1,270
Originated three years before	886		886		553
Originated four years before	379		379		2,062
Originated five years before	1,379		1,379		5,135
Revolving	8,186		8,186		7,107
Gross charge-offs, total	(0)	$ (0)	(0)	$ (0)
Substandard [Member]
Loans receivable	17,272		17,272		18,991
Substandard [Member] | Residential Portfolio Segment [Member] | One to Four Family [Member]
Loans receivable	5,674		5,674		5,515
Originated current year	1,548		1,548		1,673
Originated one years before	631		631		815
Originated two years before	610		610		453
Originated three years before	932		932		0
Originated four years before	0		0		0
Originated five years before	1,953		1,953		2,574
Revolving	0		0		0
Substandard [Member] | Residential Portfolio Segment [Member] | Multifamily [Member]
Loans receivable	182		182		0
Originated current year	182		182		0
Originated one years before	0		0		0
Originated two years before	0		0		0
Originated three years before	0		0		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	0		0		0
Substandard [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Loans receivable	70		70		150
Originated current year	0		0		0
Originated one years before	0		0		0
Originated two years before	0		0		16
Originated three years before	0		0		14
Originated four years before	13		13		0
Originated five years before	0		0		0
Revolving	57		57		120
Substandard [Member] | Construction and Land Portfolio Segment [Member]
Loans receivable	0		0		0
Originated current year	0		0		0
Originated one years before	0		0		0
Originated two years before	0		0		0
Originated three years before	0		0		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	0		0		0
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans receivable	11,346		11,346		11,721
Originated current year	11,346		11,346		11,484
Originated one years before	0		0		237
Originated two years before	0		0		0
Originated three years before	0		0		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	0		0		0
Substandard [Member] | Consumer Portfolio Segment [Member]
Loans receivable	0		0		0
Originated current year	0		0		0
Originated one years before	0		0		0
Originated two years before	0		0		0
Originated three years before	0		0		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	0		0		0
Substandard [Member] | Commercial Portfolio Segment [Member]
Loans receivable	0		0		1,605
Originated current year	0		0		0
Originated one years before	0		0		0
Originated two years before	0		0		30
Originated three years before	0		0		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	0		0		1,575
Pass [Member]
Loans receivable	1,686,195		1,686,195		1,650,766
Pass [Member] | Residential Portfolio Segment [Member] | One to Four Family [Member]
Loans receivable	491,595		491,595		500,938
Originated current year	17,145		17,145		33,349
Originated one years before	30,180		30,180		172,934
Originated two years before	163,079		163,079		146,069
Originated three years before	148,995		148,995		41,704
Originated four years before	38,731		38,731		26,323
Originated five years before	92,180		92,180		79,948
Revolving	1,285		1,285		611
Pass [Member] | Residential Portfolio Segment [Member] | Multifamily [Member]
Loans receivable	768,811		768,811		741,245
Originated current year	177,341		177,341		81,119
Originated one years before	64,069		64,069		138,231
Originated two years before	114,501		114,501		196,939
Originated three years before	149,928		149,928		125,252
Originated four years before	116,879		116,879		108,779
Originated five years before	145,274		145,274		90,155
Revolving	819		819		770
Pass [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Loans receivable	13,312		13,312		13,038
Originated current year	515		515		379
Originated one years before	359		359		478
Originated two years before	375		375		1,578
Originated three years before	1,544		1,544		149
Originated four years before	68		68		91
Originated five years before	148		148		226
Revolving	10,303		10,303		10,137
Pass [Member] | Construction and Land Portfolio Segment [Member]
Loans receivable	69,152		69,152		61,284
Originated current year	1,437		1,437		23,029
Originated one years before	50,375		50,375		25,384
Originated two years before	17,185		17,185		0
Originated three years before	140		140		9,144
Originated four years before	0		0		1,501
Originated five years before	15		15		2,226
Revolving	0		0		0
Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans receivable	312,035		312,035		301,030
Originated current year	48,648		48,648		63,660
Originated one years before	56,789		56,789		66,980
Originated two years before	62,126		62,126		51,175
Originated three years before	44,360		44,360		58,574
Originated four years before	54,798		54,798		30,699
Originated five years before	41,976		41,976		29,289
Revolving	3,338		3,338		653
Pass [Member] | Consumer Portfolio Segment [Member]
Loans receivable	938		938		825
Originated current year	100		100		0
Originated one years before	0		0		0
Originated two years before	0		0		0
Originated three years before	0		0		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	838		838		825
Pass [Member] | Commercial Portfolio Segment [Member]
Loans receivable	30,352		30,352		32,406
Originated current year	3,726		3,726		948
Originated one years before	582		582		17,011
Originated two years before	16,530		16,530		1,240
Originated three years before	870		870		553
Originated four years before	379		379		2,062
Originated five years before	1,379		1,379		5,135
Revolving	6,886		6,886		5,457
Watch [Member]
Loans receivable	11,369		11,369		10,819
Watch [Member] | Residential Portfolio Segment [Member] | One to Four Family [Member]
Loans receivable	9,489		9,489		9,675
Originated current year	6,848		6,848		7,504
Originated one years before	45		45		106
Originated two years before	295		295		1,286
Originated three years before	1,072		1,072		0
Originated four years before	0		0		72
Originated five years before	1,229		1,229		707
Revolving	0		0		0
Watch [Member] | Residential Portfolio Segment [Member] | Multifamily [Member]
Loans receivable	332		332		183
Originated current year	0		0		0
Originated one years before	0		0		183
Originated two years before	332		332		0
Originated three years before	0		0		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	0		0		0
Watch [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Loans receivable	0		0		0
Originated current year	0		0		0
Originated one years before	0		0		0
Originated two years before	0		0		0
Originated three years before	0		0		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	0		0		0
Watch [Member] | Construction and Land Portfolio Segment [Member]
Loans receivable	0		0		143
Originated current year	0		0		0
Originated one years before	0		0		0
Originated two years before	0		0		143
Originated three years before	0		0		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	0		0		0
Watch [Member] | Commercial Real Estate Portfolio Segment [Member]
Loans receivable	232		232		743
Originated current year	0		0		208
Originated one years before	0		0		0
Originated two years before	232		232		407
Originated three years before	0		0		0
Originated four years before	0		0		128
Originated five years before	0		0		0
Revolving	0		0		0
Watch [Member] | Consumer Portfolio Segment [Member]
Loans receivable	0		0		0
Originated current year	0		0		0
Originated one years before	0		0		0
Originated two years before	0		0		0
Originated three years before	0		0		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	0		0		0
Watch [Member] | Commercial Portfolio Segment [Member]
Loans receivable	1,316		1,316		75
Originated current year	0		0		0
Originated one years before	0		0		0
Originated two years before	0		0		0
Originated three years before	16		16		0
Originated four years before	0		0		0
Originated five years before	0		0		0
Revolving	$ 1,300		$ 1,300		$ 75

X

- Definition

Amount of writeoff of financing receivable, charged against allowance for credit loss.

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