Loans Receivable Held for Investment, Activity in Allowance for Loan Losses by Loan Type (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023		Dec. 31, 2022
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance		$ 4,388	[1]	$ 3,391
Provision (recapture)		935		997
Recoveries		216		0
Charge-offs		0		0
Ending balance	[1]	7,348		4,388
Allowance for credit loss due to loan growth		114,900
Real Estate [Member] | Single-Family [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance		109		145
Provision (recapture)		(63)		(36)
Recoveries		0		0
Charge-offs		0		0
Ending balance		260		109
Real Estate [Member] | Multi-Family [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance		3,273		2,657
Provision (recapture)		428		616
Recoveries		109		0
Charge-offs		0		0
Ending balance		4,413		3,273
Real Estate [Member] | Commercial Real Estate [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance		449		236
Provision (recapture)		72		213
Recoveries		107		0
Charge-offs		0		0
Ending balance		1,094		449
Real Estate [Member] | Church [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance		65		103
Provision (recapture)		(30)		(38)
Recoveries		0		0
Charge-offs		0		0
Ending balance		72		65
Real Estate [Member] | Construction [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance		313		212
Provision (recapture)		400		101
Recoveries		0		0
Charge-offs		0		0
Ending balance		932		313
Commercial - Other [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance		175		23
Provision (recapture)		100		152
Recoveries		0		0
Charge-offs		0		0
Ending balance		529		175
Consumer [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance		4		15
Provision (recapture)		0		(11)
Recoveries		0		0
Charge-offs		0		0
Ending balance		$ 0		$ 4

[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.