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Loans Receivable - Narrative (Details)	12 Months Ended
	Dec. 31, 2018 USD ($) contract	Dec. 31, 2017 USD ($) contract
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation of reserves allocation	$ 23,000	$ 261,000
Reserve For Uncollected Loan Interest	38,000	103,000
Financing receivable modifications	17,000	17,000
Outstanding Commitments To Borrowers Loans Classified As Troubled Debt Restructurings	$ 0
Increased value of allowances for loan losses		$ 0
Number of loans modified and classified as TDRs | contract	0	0
SEC Schedule, 12-09, Allowance, Loan and Lease Loss [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Valuation of reserves allocation	$ 0	$ 0

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- Definition

Financing Receivable, Modifications, Subsequent Default, Increase In Allowance For Loan And Leases Losses

+ References

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- Definition

Outstanding commitments to borrowers loans classified as troubled debt restructurings.

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- Definition

Reserve for uncollected loan interest.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953682-111524

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- Definition

Amount of valuation and qualifying accounts and reserves.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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