Loans Receivable and Allowance for Loan Losses (Schedule of troubled debt restructuring) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($) loan
Loans Receivable and Allowance for Loan Losses
Number of Loans \| loan	2
Pre- Modification Outstanding Recorded Investment	$ 668
Post-Modification Outstanding Recorded Investment	$ 668

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

+ Details

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- Definition

Amount, after troubled debt restructuring, of modified financing receivable.

+ References

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- Definition

Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

+ Details

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