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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 | 6 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | $ 16,353 | $ 25,726 | $ 16,644 | $ 26,148
Interest Income Recognized | 104 | 273 | 274 | 397
Commercial, financial, agricultural |  |  |  |
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | 2,663 | 1,873 | 2,653 | 2,187
Interest Income Recognized | 8 | 0 | 19 | 0
Lease financing |  |  |  |
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | 335 | 0 | 335 | 0
Interest Income Recognized | 0 | 0 | 0 | 0
Real estate – construction |  |  |  |
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | 0 | 295 | 0 | 268
Interest Income Recognized | 0 | 6 | 0 | 6
Real estate – 1-4 family mortgage |  |  |  |
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | 7,442 | 8,911 | 7,507 | 8,892
Interest Income Recognized | 57 | 89 | 123 | 110
Real estate – commercial mortgage |  |  |  |
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | 5,807 | 14,487 | 6,041 | 14,635
Interest Income Recognized | 38 | 176 | 130 | 279
Installment loans to individuals |  |  |  |
Investment and interest income recognized on impaired loans |  |  |  |
Average Recorded Investment | 106 | 160 | 108 | 166
Interest Income Recognized | $ 1 | $ 2 | $ 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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