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Loans - Schedule of Recorded Investment in Criticized Loans by Class and Credit Quality Indicator (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | $ 7,567,720 | $ 5,416,750
Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 2,822,900 | 1,834,400
Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 348,700 | 208,500
Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 240,200 | 147,900
Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 119,400 | 125,600
Total construction loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 708,300 | 482,000
Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1,487,400 | 1,027,400
Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 158,200 | 170,200
Total real estate loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 5,176,800 | 3,514,000
Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 784,700 | 752,400
Other consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 175,100 | 148,100
Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1,034,400 | 970,300
Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1,215,400 | 797,900
Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 136,200 | 132,900
Other Assets Especial Mentioned |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 155,100 | 163,600
Other Assets Especial Mentioned | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 78,000 | 85,300
Other Assets Especial Mentioned | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 3,200 | 13,400
Other Assets Especial Mentioned | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 2,300 | 400
Other Assets Especial Mentioned | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 2,400 | 1,600
Other Assets Especial Mentioned | Total construction loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 7,900 | 15,400
Other Assets Especial Mentioned | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 3,900 | 5,000
Other Assets Especial Mentioned | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 4,300 | 3,800
Other Assets Especial Mentioned | Total real estate loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 94,100 | 109,500
Other Assets Especial Mentioned | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 800 | 800
Other Assets Especial Mentioned | Other consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 400 | 700
Other Assets Especial Mentioned | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1,200 | 1,500
Other Assets Especial Mentioned | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 54,700 | 46,400
Other Assets Especial Mentioned | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 5,100 | 6,200
Substandard |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 217,200 | 172,200
Substandard | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 96,400 | 85,300
Substandard | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 16,400 | 6,200
Substandard | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1,700 | 1,600
Substandard | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 3,600 | 6,300
Substandard | Total construction loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 21,700 | 14,100
Substandard | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 12,500 | 12,500
Substandard | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 19,100 | 17,800
Substandard | Total real estate loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 149,700 | 129,700
Substandard | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 2,200 | 1,500
Substandard | Other consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 700 | 1,000
Substandard | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 2,900 | 2,500
Substandard | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 56,300 | 29,300
Substandard | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 8,300 | 10,700
Doubtful |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 28,200 | 36,400
Doubtful | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 10,300 | 10,800
Doubtful | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0 | 1,400
Doubtful | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 500 | 700
Doubtful | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 3,500 | 700
Doubtful | Total construction loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 4,000 | 2,800
Doubtful | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1,900 | 800
Doubtful | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0 | 0
Doubtful | Total real estate loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 16,200 | 14,400
Doubtful | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 300 | 100
Doubtful | Other consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 200 | 300
Doubtful | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 500 | 400
Doubtful | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 11,100 | 21,200
Doubtful | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 400 | 400
Total Criticized Loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 400,500 | 372,200
Total Criticized Loans | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 184,700 | 181,400
Total Criticized Loans | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 19,600 | 21,000
Total Criticized Loans | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 4,500 | 2,700
Total Criticized Loans | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 9,500 | 8,600
Total Criticized Loans | Total construction loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 33,600 | 32,300
Total Criticized Loans | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 18,300 | 18,300
Total Criticized Loans | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 23,400 | 21,600
Total Criticized Loans | Total real estate loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 260,000 | 253,600
Total Criticized Loans | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 3,300 | 2,400
Total Criticized Loans | Other consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1,300 | 2,000
Total Criticized Loans | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 4,600 | 4,400
Total Criticized Loans | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 122,100 | 96,900
Total Criticized Loans | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | $ 13,800 | $ 17,300

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