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Loans - Schedule of Recorded Investment in Criticized Loans by Class and Credit Quality Indicator (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | $ 8,470.4 | $ 7,567.7
Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 3,235.4 | 2,822.9
Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 321.6 | 348.7
Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 242.8 | 240.2
Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 274.3 | 119.4
Total construction loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 838.7 | 708.3
Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1,542.0 | 1,487.4
Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 217.4 | 158.2
Total real estate loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 5,833.5 | 5,176.8
Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 787.8 | 784.7
Other consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 200.6 | 175.1
Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1,070.2 | 1,034.4
Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1,310.3 | 1,215.4
Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 254.8 | 136.2
Other Assets Especial Mentioned |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 178.8 | 155.1
Other Assets Especial Mentioned | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 102.5 | 78.0
Other Assets Especial Mentioned | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 5.0 | 3.2
Other Assets Especial Mentioned | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 2.8 | 2.3
Other Assets Especial Mentioned | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1.7 | 2.4
Other Assets Especial Mentioned | Total construction loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 9.5 | 7.9
Other Assets Especial Mentioned | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 3.0 | 3.9
Other Assets Especial Mentioned | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 9.0 | 4.3
Other Assets Especial Mentioned | Total real estate loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 124.0 | 94.1
Other Assets Especial Mentioned | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0.7 | 0.8
Other Assets Especial Mentioned | Other consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0.3 | 0.4
Other Assets Especial Mentioned | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1.0 | 1.2
Other Assets Especial Mentioned | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 39.4 | 54.7
Other Assets Especial Mentioned | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 14.4 | 5.1
Substandard |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 201.6 | 217.2
Substandard | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 87.4 | 96.4
Substandard | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 7.0 | 16.4
Substandard | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 2.0 | 1.7
Substandard | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 3.9 | 3.6
Substandard | Total construction loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 12.9 | 21.7
Substandard | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 10.8 | 12.5
Substandard | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 24.0 | 19.1
Substandard | Total real estate loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 135.1 | 149.7
Substandard | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 2.1 | 2.2
Substandard | Other consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0.8 | 0.7
Substandard | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 2.9 | 2.9
Substandard | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 45.8 | 56.3
Substandard | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 17.8 | 8.3
Doubtful |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 20.9 | 28.2
Doubtful | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 2.9 | 10.3
Doubtful | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 3.3 | 0.0
Doubtful | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0.4 | 0.5
Doubtful | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0.0 | 3.5
Doubtful | Total construction loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 3.7 | 4.0
Doubtful | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0.7 | 1.9
Doubtful | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0.1 | 0.0
Doubtful | Total real estate loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 7.4 | 16.2
Doubtful | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0.1 | 0.3
Doubtful | Other consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0.1 | 0.2
Doubtful | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 0.2 | 0.5
Doubtful | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 11.8 | 11.1
Doubtful | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1.5 | 0.4
Total Criticized Loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 401.3 | 400.5
Total Criticized Loans | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 192.8 | 184.7
Total Criticized Loans | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 15.3 | 19.6
Total Criticized Loans | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 5.2 | 4.5
Total Criticized Loans | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 5.6 | 9.5
Total Criticized Loans | Total construction loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 26.1 | 33.6
Total Criticized Loans | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 14.5 | 18.3
Total Criticized Loans | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 33.1 | 23.4
Total Criticized Loans | Total real estate loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 266.5 | 260.0
Total Criticized Loans | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 2.9 | 3.3
Total Criticized Loans | Other consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 1.2 | 1.3
Total Criticized Loans | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 4.1 | 4.6
Total Criticized Loans | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | 97.0 | 122.1
Total Criticized Loans | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans |  |
Loans held for investment | $ 33.7 | $ 13.8

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