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Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
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Summary of loans, by loan type |  |
Total loans | $ 6,439,420 | $ 6,348,172
Commercial, financial and agricultural |  |
Summary of loans, by loan type |  |
Total loans | 3,321,341 | 3,322,668
Real estate - mortgage |  |
Summary of loans, by loan type |  |
Total loans | 1,136,921 | 1,133,525
Commercial Real Estate:Other Construction and Land Development |  |
Summary of loans, by loan type |  |
Total loans | 1,781,953 | 1,683,550
Consumer |  |
Summary of loans, by loan type |  |
Total loans | 47,747 | 49,543
Foreign |  |
Summary of loans, by loan type |  |
Total loans | $ 151,458 | $ 158,886

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
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