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2. Investment Securities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Investment securities available for sale
Amortized Cost	$ 252,140
Estimated Fair Value	265,114	$ 268,530
Mortgage-backed securities
Investment securities available for sale
Amortized Cost	70,509	76,406
Gross Unrealized Gains	2,269	1,526
Gross Unrealized Losses	0	45
Estimated Fair Value	72,778	77,887
U.S. Government sponsored enterprises
Investment securities available for sale
Amortized Cost	39,913	38,173
Gross Unrealized Gains	790	399
Gross Unrealized Losses	218	155
Estimated Fair Value	40,485	38,417
State and political subdivisions
Investment securities available for sale
Amortized Cost	139,193	141,500
Gross Unrealized Gains	9,925	6,817
Gross Unrealized Losses	2	72
Estimated Fair Value	149,116	148,245
Corporate bonds
Investment securities available for sale
Amortized Cost	1,511	1,928
Gross Unrealized Gains	8	0
Gross Unrealized Losses	3	22
Estimated Fair Value	1,516	1,906
Trust preferred securities
Investment securities available for sale
Amortized Cost	750	750
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	750	750
Equity securities
Investment securities available for sale
Amortized Cost	264	748
Gross Unrealized Gains	205	577
Gross Unrealized Losses	0	0
Estimated Fair Value	469	1,325
Total
Investment securities available for sale
Amortized Cost	252,140	259,505
Gross Unrealized Gains	13,197	9,319
Gross Unrealized Losses	223	294
Estimated Fair Value	$ 265,114	$ 268,530

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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
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
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