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Non Purchased Loans - Investment and Interest Income Recognized on Impaired Loans (Details) - Non purchased loans and leases - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | $ 19,469 | $ 29,842 | $ 19,937 | $ 30,654
Interest Income Recognized | 159 | 192 | 345 | 590
Commercial, financial, agricultural |  |  |  |
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | 1,960 | 1,841 | 2,140 | 1,762
Interest Income Recognized | 8 | 22 | 8 | 42
Real estate – construction |  |  |  |
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | 897 | 862 | 861 | 671
Interest Income Recognized | 33 | 26 | 36 | 27
Real estate – 1-4 family mortgage |  |  |  |
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | 8,897 | 16,119 | 8,944 | 16,354
Interest Income Recognized | 71 | 97 | 165 | 283
Real estate – commercial mortgage |  |  |  |
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | 7,575 | 10,953 | 7,844 | 11,800
Interest Income Recognized | 46 | 46 | 134 | 236
Installment loans to individuals |  |  |  |
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | 140 | 67 | 148 | 67
Interest Income Recognized | $ 1 | $ 1 | $ 2 | $ 2

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524 + Details
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