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3. Loans, TDR Loan Modifications (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Integer	Dec. 31, 2015 USD ($) Integer
TDR Loans
Post-Modification Outstanding Recorded Investment	$ 5,900	$ 8,800
Construction and land development
TDR Loans
Number of Contracts | Integer		1
Pre-Modification Outstanding Recorded Investment		$ 216
Post-Modification Outstanding Recorded Investment		$ 216
Single-family residential
TDR Loans
Number of Contracts | Integer	3	3
Pre-Modification Outstanding Recorded Investment	$ 124	$ 288
Post-Modification Outstanding Recorded Investment	$ 121	$ 271
Total TDR Loans
TDR Loans
Number of Contracts | Integer	3	4
Pre-Modification Outstanding Recorded Investment	$ 124	$ 504
Post-Modification Outstanding Recorded Investment	$ 121	$ 487

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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Pre-modification amount of investment in financing receivables 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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