Loans Receivable and the Allowance for Loan Losses - Aged analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 74,048	$ 78,484
Loans over 90 days past due and still accruing	0	0
Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	74,048	78,484
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	73,397	77,830
Watch
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	87	87
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	564	567
Mortgage - 1-4 Family
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	69,532	73,591
Mortgage - 1-4 Family \| Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	69,532	73,591
Mortgage - 1-4 Family \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	68,881	72,937
Mortgage - 1-4 Family \| Watch
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	87	87
Mortgage - 1-4 Family \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	564	567
Mortgage - Multifamily
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	3,215	3,567
Mortgage - Multifamily \| Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	3,215	3,567
Mortgage - Multifamily \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	3,215	3,567
Mortgage - Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,095	1,117
Mortgage - Commercial real estate \| Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,095	1,117
Mortgage - Commercial real estate \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	1,095	1,117
Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	206	209
Consumer Loans \| Performing
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	206	209
Consumer Loans \| Pass
Financing Receivable, Recorded Investment [Line Items]
Loans receivable	$ 206	$ 209

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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- Definition

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+ References

No definition available.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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