Loans Receivable Held for Investment, Average of Loans Individually Evaluated for Impairment by Loan Type and Related Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Loans Individually Evaluated for Impairment by Loan Type and Related Interest Income [Abstract]
Average recorded investment	$ 4,882	$ 5,683	$ 5,055	$ 6,220
Cash basis interest income recognized	80	90	417	636
Foregone interest income	22	41	67	121
Loans delinquent amount	0		0
Real Estate [Member] \| Single Family [Member]
Loans Individually Evaluated for Impairment by Loan Type and Related Interest Income [Abstract]
Average recorded investment	589	625	596	631
Cash basis interest income recognized	7	7	22	22
Real Estate [Member] \| Multi-Family [Member]
Loans Individually Evaluated for Impairment by Loan Type and Related Interest Income [Abstract]
Average recorded investment	305	317	308	320
Cash basis interest income recognized	5	6	16	17
Real Estate [Member] \| Church [Member]
Loans Individually Evaluated for Impairment by Loan Type and Related Interest Income [Abstract]
Average recorded investment	3,938	4,678	4,094	5,206
Cash basis interest income recognized	67	76	376	594
Commercial - Other [Member]
Loans Individually Evaluated for Impairment by Loan Type and Related Interest Income [Abstract]
Average recorded investment	50	63	57	63
Cash basis interest income recognized	$ 1	$ 1	$ 3	$ 3

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- Definition

This is the principal amount of loans (across all types of loans) that are overdue in payment by a set number of days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (e)(4)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5258-111524

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- Definition

Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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- Definition

Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18794-111554

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