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2. Investment Securities (Tables) | 6 Months Ended
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Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract] |
Investment securities available for sale |
(Dollars in thousands) |  |  |  |  |  |  |  |  |  |  |
|  | June 30, 2016
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value
Mortgage-backed securities |  | $ | 70,509 |  |  |  | 2,269 |  |  |  | - |  |  |  | 72,778
U.S. Government |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
sponsored enterprises |  |  | 39,913 |  |  |  | 790 |  |  |  | 218 |  |  |  | 40,485
State and political subdivisions |  |  | 139,193 |  |  |  | 9,925 |  |  |  | 2 |  |  |  | 149,116
Corporate bonds |  |  | 1,511 |  |  |  | 8 |  |  |  | 3 |  |  |  | 1,516
Trust preferred securities |  |  | 750 |  |  |  | - |  |  |  | - |  |  |  | 750
Equity securities |  |  | 264 |  |  |  | 205 |  |  |  | - |  |  |  | 469
Total |  | $ | 252,140 |  |  |  | 13,197 |  |  |  | 223 |  |  |  | 265,114
(Dollars in thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | December 31, 2015
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value
Mortgage-backed securities |  | $ | 76,406 |  |  |  | 1,526 |  |  |  | 45 |  |  |  | 77,887
U.S. Government |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
sponsored enterprises |  |  | 38,173 |  |  |  | 399 |  |  |  | 155 |  |  |  | 38,417
State and political subdivisions |  |  | 141,500 |  |  |  | 6,817 |  |  |  | 72 |  |  |  | 148,245
Corporate bonds |  |  | 1,928 |  |  |  | - |  |  |  | 22 |  |  |  | 1,906
Trust preferred securities |  |  | 750 |  |  |  | - |  |  |  | - |  |  |  | 750
Equity securities |  |  | 748 |  |  |  | 577 |  |  |  | - |  |  |  | 1,325
Total |  | $ | 259,505 |  |  |  | 9,319 |  |  |  | 294 |  |  |  | 268,530
Current fair value and associated unrealized losses on investments in securities with unrealized losses |
(Dollars in thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | June 30, 2016
|  | Less than 12 Months |  |  | 12 Months or More |  |  | Total
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses
U.S. Government |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
sponsored enterprises |  | $ | 7,709 |  |  |  | 65 |  |  |  | 10,218 |  |  |  | 153 |  |  |  | 17,927 |  |  |  | 218
State and political subdivisions |  |  | - |  |  |  | - |  |  |  | 593 |  |  |  | 2 |  |  |  | 593 |  |  |  | 2
Corporate bonds |  |  | 997 |  |  |  | 3 |  |  |  | - |  |  |  | - |  |  |  | 997 |  |  |  | 3
Total |  | $ | 8,706 |  |  |  | 68 |  |  |  | 10,811 |  |  |  | 155 |  |  |  | 19,517 |  |  |  | 223
(Dollars in thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | December 31, 2015
|  | Less than 12 Months |  |  | 12 Months or More |  |  | Total
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses
Mortgage-backed securities |  | $ | 7,891 |  |  |  | 45 |  |  |  | - |  |  |  | - |  |  |  | 7,891 |  |  |  | 45
U.S. Government |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
sponsored enterprises |  |  | 3,074 |  |  |  | 13 |  |  |  | 10,828 |  |  |  | 142 |  |  |  | 13,902 |  |  |  | 155
State and political subdivisions |  |  | 2,198 |  |  |  | 4 |  |  |  | 3,930 |  |  |  | 68 |  |  |  | 6,128 |  |  |  | 72
Corporate bonds |  |  | 1,500 |  |  |  | 22 |  |  |  | - |  |  |  | - |  |  |  | 1,500 |  |  |  | 22
Total |  | $ | 14,663 |  |  |  | 84 |  |  |  | 14,758 |  |  |  | 210 |  |  |  | 29,421 |  |  |  | 294
Amortized cost and estimated fair value of investment securities available for sale by contractual maturity |
June 30, 2016 (Dollars in thousands) |  | Amortized Cost |  |  | Estimated Fair Value
Due within one year |  | $ | 5,196 |  |  |  | 5,218
Due from one to five years |  |  | 73,590 |  |  |  | 78,304
Due from five to ten years |  |  | 88,245 |  |  |  | 93,409
Due after ten years |  |  | 14,336 |  |  |  | 14,936
Mortgage-backed securities |  |  | 70,509 |  |  |  | 72,778
Equity securities |  |  | 264 |  |  |  | 469
Total |  | $ | 252,140 |  |  |  | 265,114

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- Definition Tabular disclosure of fair value of investments in debt and equity securities in an unrealized loss position categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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