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3. Loans (Details 7) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) Integer	Dec. 31, 2018 USD ($) Integer
TDR Loans
Post-modification outstanding recorded investment	$ 4,300	$ 4,700
Single-family residential
TDR Loans
Number of contracts | Integer	2	2
Pre-modification outstanding recorded investment	$ 94	$ 94
Post-modification outstanding recorded investment	$ 94	$ 94
Total TDR Loans
TDR Loans
Number of contracts | Integer	2	2
Pre-modification outstanding recorded investment	$ 94	$ 94
Post-modification outstanding recorded investment	$ 94	$ 94

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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

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

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

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

+ 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

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