Loans Receivable Held for Investment - Recorded Investment in Non-accrual Loans by Loan Type (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Investment in non-accrual loans by type of loans
Total non-accrual loans	$ 280	$ 424
Loans 90 days or more delinquent that were accruing interest	0	0
Single family
Investment in non-accrual loans by type of loans
Total non-accrual loans	14	18
Church
Investment in non-accrual loans by type of loans
Total non-accrual loans	$ 266	$ 406

Amount of financing receivable 90 days or more past due and still accruing.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
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-Section 55
-Paragraph 80
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant