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3. Loans, TDR Loan Modifications (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) Integer	Dec. 31, 2017 USD ($) Integer
TDR Loans
Post-Modification Outstanding Recorded Investment	$ 4,800	$ 4,900
Single-family residential
TDR Loans
Number of Contracts | Integer	2	2
Pre-Modification Outstanding Recorded Investment	$ 94	$ 22
Post-Modification Outstanding Recorded Investment	$ 94	$ 22
Total TDR Loans
TDR Loans
Number of Contracts | Integer	2	2
Pre-Modification Outstanding Recorded Investment	$ 94	$ 22
Post-Modification Outstanding Recorded Investment	$ 94	$ 22

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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-Name Accounting Standards Codification
-Topic 310
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