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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
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Mar. 31, 2018 | Mar. 31, 2017
Investment and interest income recognized on impaired loans |  |
Average Recorded Investment | $ 17,618 | $ 29,234
Interest Income Recognized | 189 | 171
Commercial, financial, agricultural |  |
Investment and interest income recognized on impaired loans |  |
Average Recorded Investment | 2,338 | 2,714
Interest Income Recognized | 11 | 39
Lease financing |  |
Investment and interest income recognized on impaired loans |  |
Average Recorded Investment | 159 | 0
Interest Income Recognized | 0 | 0
Real estate – construction |  |
Investment and interest income recognized on impaired loans |  |
Average Recorded Investment | 150 | 0
Interest Income Recognized | 18 | 0
Real estate – 1-4 family mortgage |  |
Investment and interest income recognized on impaired loans |  |
Average Recorded Investment | 8,197 | 11,088
Interest Income Recognized | 67 | 26
Real estate – commercial mortgage |  |
Investment and interest income recognized on impaired loans |  |
Average Recorded Investment | 6,670 | 15,314
Interest Income Recognized | 92 | 106
Installment loans to individuals |  |
Investment and interest income recognized on impaired loans |  |
Average Recorded Investment | 104 | 118
Interest Income Recognized | $ 1 | $ 0

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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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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + 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)(2) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
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