Loans Receivable Held for Investment, Summary (Details) - USD ($) $ in Thousands		Sep. 30, 2023		Jun. 30, 2023	Dec. 31, 2022		Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		$ 841,745			$ 771,689
Unamortized net deferred loan costs and premiums		1,368			1,755
Gross loans receivable		843,113			773,444
Credit and interest marks on purchased loans, net		(858)			(1,010)
Allowance for credit losses		(6,899)	[1]	$ (6,970)	(4,388)	[1]	$ (3,983)	$ (2,962)	$ (3,391)
Loans receivable, net		835,356			768,046
Real Estate [Member] | Single Family [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		25,514			30,038
Gross loans receivable		25,514			30,038
Allowance for credit losses		(241)		(247)	(109)		(112)	(120)	(145)
Real Estate [Member] | Multi-Family [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		532,689			502,141
Gross loans receivable		534,057			503,896
Allowance for credit losses		(4,247)		(4,255)	(3,273)		(2,919)	(2,278)	(2,657)
Real Estate [Member] | Commercial Real Estate [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		116,100			114,574
Gross loans receivable		116,100			114,574
Allowance for credit losses		(1,021)		(1,012)	(449)		(295)	(153)	(236)
Real Estate [Member] | Church [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		12,896			15,780
Gross loans receivable		12,896			15,780
Allowance for credit losses		(79)		(83)	(65)		(54)	(48)	(103)
Real Estate [Member] | Construction [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		81,813			40,703
Gross loans receivable		81,813			40,703
Allowance for credit losses		(847)		(788)	(313)		(408)	(221)	(212)
Commercial - Other [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		64,943			64,841
Gross loans receivable					68,442
Allowance for credit losses		(425)		(546)	(175)		(191)	(138)	(23)
SBA Loans [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums	[2]	7,770			3,601
Gross loans receivable		7,770			3,601
Allowance for credit losses		(39)		(39)	0
Consumer [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		20			11
Gross loans receivable		20			11
Allowance for credit losses		$ 0		$ 0	$ (4)		$ (4)	$ (4)	$ (15)

[1] The allowance for credit losses as of December 31, 2022 was accounted for under ASC 450 and ASC 310, which is reflective of probable incurred losses as of the date of the consolidated statement of financial condition. Effective January 1, 2023, the allowance for credit losses is accounted for under ASC 326, which is reflective of estimated expected lifetime credit losses.

[2] Including Paycheck Protection Program (PPP) loans.