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2. Investment Securities (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2014 | Dec. 31, 2013
Investment securities available for sale |  |
Amortized Cost | $ 272,598 | $ 299,809
Estimated Fair Value | 279,787 | 297,890
Mortgage-backed securities |  |
Investment securities available for sale |  |
Amortized Cost | 94,571 | 123,706
Gross Unrealized Gains | 1,591 | 1,040
Gross Unrealized Losses | 141 | 769
Estimated Fair Value | 96,021 | 123,977
U.S. Government sponsored enterprises |  |
Investment securities available for sale |  |
Amortized Cost | 27,939 | 22,115
Gross Unrealized Gains | 185 | 97
Gross Unrealized Losses | 147 | 69
Estimated Fair Value | 27,977 | 22,143
State and political subdivisions |  |
Investment securities available for sale |  |
Amortized Cost | 146,108 | 148,468
Gross Unrealized Gains | 5,612 | 1,987
Gross Unrealized Losses | 711 | 5,087
Estimated Fair Value | 151,009 | 145,368
Corporate bonds |  |
Investment securities available for sale |  |
Amortized Cost | 2,482 | 3,522
Gross Unrealized Gains | 14 | 11
Gross Unrealized Losses | 22 | 70
Estimated Fair Value | 2,474 | 3,463
Trust preferred securities |  |
Investment securities available for sale |  |
Amortized Cost | 750 | 1,250
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 750 | 1,250
Equity securities |  |
Investment securities available for sale |  |
Amortized Cost | 748 | 748
Gross Unrealized Gains | 808 | 941
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 1,556 | 1,689
Total |  |
Investment securities available for sale |  |
Amortized Cost | 272,598 | 299,809
Gross Unrealized Gains | 8,210 | 4,076
Gross Unrealized Losses | 1,021 | 5,995
Estimated Fair Value | $ 279,787 | $ 297,890

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