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6. Fair Value, Level of Hierarchy (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Estimated Fair Value	$ 268,821	$ 281,099
Level 1
Estimated Fair Value	1,174	1,378
Level 2
Estimated Fair Value	266,897	278,971
Level 3
Estimated Fair Value	750	750
Mortgage-backed securities
Estimated Fair Value	77,466	90,210
Mortgage-backed securities | Level 1
Estimated Fair Value	0	0
Mortgage-backed securities | Level 2
Estimated Fair Value	77,466	90,210
Mortgage-backed securities | Level 3
Estimated Fair Value	0	0
U.S. Government sponsored enterprises
Estimated Fair Value	39,169	34,048
U.S. Government sponsored enterprises | Level 1
Estimated Fair Value	0	0
U.S. Government sponsored enterprises | Level 2
Estimated Fair Value	39,169	34,048
U.S. Government sponsored enterprises | Level 3
Estimated Fair Value	0	0
State and political subdivisions
Estimated Fair Value	148,322	152,246
State and political subdivisions | Level 1
Estimated Fair Value	0	0
State and political subdivisions | Level 2
Estimated Fair Value	148,322	152,246
State and political subdivisions | Level 3
Estimated Fair Value	0	0
Corporate bonds
Estimated Fair Value	1,940	2,467
Corporate bonds | Level 1
Estimated Fair Value	0	0
Corporate bonds | Level 2
Estimated Fair Value	1,940	2,467
Corporate bonds | Level 3
Estimated Fair Value	0	0
Trust preferred securities
Estimated Fair Value	750	750
Trust preferred securities | Level 1
Estimated Fair Value	0	0
Trust preferred securities | Level 2
Estimated Fair Value	0	0
Trust preferred securities | Level 3
Estimated Fair Value	750	750
Equity securities
Estimated Fair Value	1,174	1,378
Equity securities | Level 1
Estimated Fair Value	1,174	1,378
Equity securities | Level 2
Estimated Fair Value	0	0
Equity securities | Level 3
Estimated Fair Value	$ 0	$ 0

X

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 320



-SubTopic 10



-Section 25



-Paragraph 1



-Subparagraph (b)



-URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 320



-SubTopic 10



-Section 50



-Paragraph 5



-Subparagraph (aa)



-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563



Reference 3: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 320



-SubTopic 10



-Section 45



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562

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