Loans Receivable Held for Investment, Summary (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023		Dec. 31, 2022		Mar. 31, 2022	Dec. 31, 2021
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		$ 781,816		$ 771,689
Unamortized net deferred loan costs and premiums		1,532		1,755
Gross loans receivable		783,348		773,444
Credit and interest marks on purchased loans, net		(1,010)		(1,010)
Allowance for credit losses		(6,285)	[1]	(4,388)	[1]	$ (3,539)	$ (3,391)
Loans receivable, net		776,053		768,046
Real Estate [Member] | Single Family [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		29,216		30,038
Gross loans receivable		29,216		30,038
Allowance for credit losses		(261)		(109)		(157)	(145)
Real Estate [Member] | Multi-Family [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		509,514		502,141
Gross loans receivable		511,046		503,896
Allowance for credit losses		(3,932)		(3,273)		(2,771)	(2,657)
Real Estate [Member] | Commercial Real Estate [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		129,031		114,574
Gross loans receivable		129,031		114,574
Allowance for credit losses		(1,012)		(449)		(216)	(236)
Real Estate [Member] | Church [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		13,983		15,780
Gross loans receivable		13,983		15,780
Allowance for credit losses		(92)		(65)		(63)	(103)
Real Estate [Member] | Construction [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		59,143		40,703
Gross loans receivable		59,143		40,703
Allowance for credit losses		(593)		(313)		(237)	(212)
Commercial - Other [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		37,354		64,841
Gross loans receivable				68,442
Allowance for credit losses		(357)		(175)		(80)	(23)
Commercial - Other [Member] | PPP Loans [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		$ 2,700		2,700
Loans receivable, interest rate		1.00%
Commercial - Other [Member] | PPP Loans [Member] | Minimum [Member]
Loans Receivable Held for Investment [Abstract]
Loans receivable, term		2 years
Commercial - Other [Member] | PPP Loans [Member] | Maximum [Member]
Loans Receivable Held for Investment [Abstract]
Loans receivable, term		5 years
SBA Loans [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums	[2]	$ 3,565		3,601
Gross loans receivable		3,565		3,601
Allowance for credit losses		(38)		0
Consumer [Member]
Loans Receivable Held for Investment [Abstract]
Gross loans receivable before deferred loan costs and premiums		10		11
Gross loans receivable		10		11
Allowance for credit losses		$ 0		$ (4)		$ (15)	$ (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.