Loans Receivable Held for Investment, Activity in Allowance for Loan Losses by Loan Type (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance	$ 3,215	$ 3,182
Provision for (recapture of) loan losses	0	29
Recoveries	0	0
Loans charged off	0	0
Ending balance	3,215	3,211
Real Estate [Member] \| Single Family [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance	296	312
Provision for (recapture of) loan losses	(21)	(4)
Recoveries	0	0
Loans charged off	0	0
Ending balance	275	308
Real Estate [Member] \| Multi-Family [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance	2,433	2,319
Provision for (recapture of) loan losses	40	89
Recoveries	0	0
Loans charged off	0	0
Ending balance	2,473	2,408
Real Estate [Member] \| Commercial Real Estate [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance	222	133
Provision for (recapture of) loan losses	(3)	7
Recoveries	0	0
Loans charged off	0	0
Ending balance	219	140
Real Estate [Member] \| Church [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance	237	362
Provision for (recapture of) loan losses	(16)	(39)
Recoveries	0	0
Loans charged off	0	0
Ending balance	221	323
Real Estate [Member] \| Construction [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance	22	48
Provision for (recapture of) loan losses	0	(24)
Recoveries	0	0
Loans charged off	0	0
Ending balance	22	24
Commercial - Other [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance	4	7
Provision for (recapture of) loan losses	1	0
Recoveries	0	0
Loans charged off	0	0
Ending balance	5	7
Consumer [Member]
Allowance for Loan and Lease Losses by Loan Type [Roll Forward]
Beginning balance	1	1
Provision for (recapture of) loan losses	(1)	0
Recoveries	0	0
Loans charged off	0	0
Ending balance	$ 0	$ 1

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 310
-SubTopic 10
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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

+ References

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-Publisher FASB
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-Topic 230
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