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2. Investment Securities (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Investment securities available for sale
Estimated Fair Value	$ 300,756	$ 297,890
Mortgage-backed securities
Investment securities available for sale
Amortized Cost	121,262	123,706
Gross Unrealized Gains	1,208	1,040
Gross Unrealized Losses	516	769
Estimated Fair Value	121,954	123,977
U.S. Government sponsored enterprises
Investment securities available for sale
Amortized Cost	25,698	22,115
Gross Unrealized Gains	92	97
Gross Unrealized Losses	173	69
Estimated Fair Value	25,617	22,143
State and political subdivisions
Investment securities available for sale
Amortized Cost	146,374	148,468
Gross Unrealized Gains	3,231	1,987
Gross Unrealized Losses	2,731	5,087
Estimated Fair Value	146,874	145,368
Corporate bonds
Investment securities available for sale
Amortized Cost	3,509	3,522
Gross Unrealized Gains	12	11
Gross Unrealized Losses	39	70
Estimated Fair Value	3,482	3,463
Trust preferred securities
Investment securities available for sale
Amortized Cost	1,250	1,250
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	1,250	1,250
Equity securities
Investment securities available for sale
Amortized Cost	748	748
Gross Unrealized Gains	831	941
Gross Unrealized Losses	0	0
Estimated Fair Value	1,579	1,689
Total
Investment securities available for sale
Amortized Cost	298,841	299,809
Gross Unrealized Gains	5,374	4,076
Gross Unrealized Losses	3,459	5,995
Estimated Fair Value	$ 300,756	$ 297,890

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=28360136&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=6871852&loc=d3e26610-111562

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ 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)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

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- Definition

Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563

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