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Allowance for Loan Losses - Investment in Loans, Net of Unearned Income on Impairment Methodology (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
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Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | $ 26,747 | $ 27,992
Collectively evaluated for impairment | 7,176,982 | 5,902,959
Loans, net of unearned income | 7,448,608 | 6,202,709
Receivables Acquired with Deteriorated Credit Quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | 244,879 | 271,758
Commercial, financial, agricultural |  |
Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | 2,291 | 1,886
Collectively evaluated for impairment | 989,185 | 703,610
Loans, net of unearned income | 1,008,935 | 717,490
Commercial, financial, agricultural | Receivables Acquired with Deteriorated Credit Quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | 17,459 | 11,994
Real estate – construction |  |
Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | 2,730 | 662
Collectively evaluated for impairment | 574,990 | 551,177
Loans, net of unearned income | 577,720 | 552,679
Real estate – construction | Receivables Acquired with Deteriorated Credit Quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | 0 | 840
Real estate – 1-4 family mortgage |  |
Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | 13,347 | 12,088
Collectively evaluated for impairment | 2,222,736 | 1,794,137
Loans, net of unearned income | 2,295,852 | 1,878,177
Real estate – 1-4 family mortgage | Receivables Acquired with Deteriorated Credit Quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | 59,769 | 71,952
Real estate – commercial mortgage |  |
Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | 8,078 | 13,079
Collectively evaluated for impairment | 3,216,345 | 2,700,829
Loans, net of unearned income | 3,390,389 | 2,898,895
Real estate – commercial mortgage | Receivables Acquired with Deteriorated Credit Quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | 165,966 | 184,987
Installment loans to individuals |  |
Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | 301 | 277
Collectively evaluated for impairment | 173,726 | 153,206
Loans, net of unearned income | 175,712 | 155,468
Installment loans to individuals | Receivables Acquired with Deteriorated Credit Quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | $ 1,685 | $ 1,985

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- Definition Investment in loans, net of unearned income on impairment methodology. + References No definition available. + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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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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- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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