Loans Receivable Held for Investment, Allowance for Loan Losses and Recorded Investment in Loans by Type of Loans and Based on Impairment Method (Details) - USD ($) $ in Thousands	Sep. 30, 2023		Jun. 30, 2023	Dec. 31, 2022		Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment				$ 7
Collectively evaluated for impairment				4,381
Total ending allowance balance	$ 6,899	[1]	$ 6,970	4,388	[1]	$ 3,983	$ 2,962	$ 3,391
Loans [Abstract]
Loans individually evaluated for impairment				1,712
Loans collectively evaluated for impairment				624,468
Subtotal				626,180
Loans acquired in the CFBanc merger				147,264
Gross loans receivable	843,113			773,444
Real Estate [Member] | Single Family [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment				3
Collectively evaluated for impairment				106
Total ending allowance balance	241		247	109		112	120	145
Loans [Abstract]
Loans individually evaluated for impairment				57
Loans collectively evaluated for impairment				20,893
Subtotal				20,950
Loans acquired in the CFBanc merger				9,088
Gross loans receivable	25,514			30,038
Real Estate [Member] | Multi-Family [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment				0
Collectively evaluated for impairment				3,273
Total ending allowance balance	4,247		4,255	3,273		2,919	2,278	2,657
Loans [Abstract]
Loans individually evaluated for impairment				0
Loans collectively evaluated for impairment				462,539
Subtotal				462,539
Loans acquired in the CFBanc merger				41,357
Gross loans receivable	534,057			503,896
Real Estate [Member] | Commercial Real Estate [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment				0
Collectively evaluated for impairment				449
Total ending allowance balance	1,021		1,012	449		295	153	236
Loans [Abstract]
Loans individually evaluated for impairment				0
Loans collectively evaluated for impairment				63,929
Subtotal				63,929
Loans acquired in the CFBanc merger				50,645
Gross loans receivable	116,100			114,574
Real Estate [Member] | Church [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment				4
Collectively evaluated for impairment				61
Total ending allowance balance	79		83	65		54	48	103
Loans [Abstract]
Loans individually evaluated for impairment				1,655
Loans collectively evaluated for impairment				9,008
Subtotal				10,663
Loans acquired in the CFBanc merger				5,117
Gross loans receivable	12,896			15,780
Real Estate [Member] | Construction [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment				0
Collectively evaluated for impairment				313
Total ending allowance balance	847		788	313		408	221	212
Loans [Abstract]
Loans individually evaluated for impairment				0
Loans collectively evaluated for impairment				38,530
Subtotal				38,530
Loans acquired in the CFBanc merger				2,173
Gross loans receivable	81,813			40,703
Commercial - Other [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment				0
Collectively evaluated for impairment				175
Total ending allowance balance	425		546	175		191	138	23
Loans [Abstract]
Loans individually evaluated for impairment				0
Loans collectively evaluated for impairment				29,558
Subtotal				29,558
Loans acquired in the CFBanc merger				38,884
Gross loans receivable				68,442
Consumer [Member]
Ending Allowance Balance Attributable to Loans [Abstract]
Individually evaluated for impairment				0
Collectively evaluated for impairment				4
Total ending allowance balance	0		$ 0	4		$ 4	$ 4	$ 15
Loans [Abstract]
Loans individually evaluated for impairment				0
Loans collectively evaluated for impairment				11
Subtotal				11
Loans acquired in the CFBanc merger				0
Gross loans receivable	$ 20			$ 11

[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.