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Loans - Schedule of Recorded Investment in Criticized Loans by Class and Credit Quality Indicator (Details) - USD ($) | Jun. 30, 2020 | Dec. 31, 2019
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Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | $ 8,936,200,000
Non-owner occupied |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | $ 273.2 |
2019 | 332.4 |
2018 | 226.6 |
2017 | 122.1 |
2016 | 171.2 |
Prior | 415.0 |
Revolving Loans Amortized Cost Basis | 20.0 |
Total | 1,560.5 |
Commercial Real Estate |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 3,487,800,000
Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment | 3,593,800,000 | 3,487,800,000
Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 61.0 |
2019 | 83.6 |
2018 | 51.6 |
2017 | 38.1 |
2016 | 11.1 |
Prior | 34.0 |
Revolving Loans Amortized Cost Basis | 5.9 |
Total | 285.3 |
Loans held for investment | 285,300,000 | 302,100,000
Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 52.8 |
2019 | 99.5 |
2018 | 27.2 |
2017 | 6.4 |
2016 | 0.3 |
Prior | 0.3 |
Revolving Loans Amortized Cost Basis | 59.7 |
Total | 246.2 |
Loans held for investment | 246,200,000 | 244,100,000
Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 96.0 |
2019 | 232.7 |
2018 | 87.6 |
2017 | 22.4 |
2016 | 9.8 |
Prior | 0.6 |
Revolving Loans Amortized Cost Basis | 10.7 |
Total | 459.8 |
Loans held for investment | 459,800,000 | 431,500,000
Total construction |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 977,700,000
Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment | 1,287,600,000 | 1,246,100,000
Total construction loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment | 991,300,000 | 977,700,000
Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 26.1 |
2019 | 65.8 |
2018 | 36.9 |
2017 | 23.4 |
2016 | 18.9 |
Prior | 43.7 |
Revolving Loans Amortized Cost Basis | 9.4 |
Total | 224.2 |
Loans held for investment | 224,200,000 | 226,600,000
Real Estate Loan |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 5,938,200,000
Total real estate loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment | 6,096,900,000 | 5,938,200,000
Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 184.7 |
2019 | 239.2 |
2018 | 152.7 |
2017 | 100.5 |
2016 | 67.8 |
Prior | 57.0 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 801.9 |
Loans held for investment | 801,900,000 | 784,600,000
Direct consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 29.8 |
2019 | 39.5 |
2018 | 40.0 |
2017 | 17.1 |
2016 | 8.0 |
Prior | 11.2 |
Revolving Loans Amortized Cost Basis | 23.7 |
Total | 169.3 |
Loans held for investment | 169,300,000 | 179,000,000.0
Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 138.1 |
Loans held for investment | 70,600,000 | 81,600,000
Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment | 1,041,800,000 | 1,045,200,000
Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment | 2,648,600,000 | 1,673,700,000
Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment | 282,800,000 | 279,100,000
Owner occupied |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 229.1 |
2019 | 347.6 |
2018 | 250.1 |
2017 | 166.9 |
2016 | 207.1 |
Prior | 477.7 |
Revolving Loans Amortized Cost Basis | 16.3 |
Total | 1,694.8 |
Multi-family |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 68.5 |
2019 | 76.7 |
2018 | 31.0 |
2017 | 30.4 |
2016 | 27.8 |
Prior | 101.5 |
Revolving Loans Amortized Cost Basis | 2.6 |
Total | 338.5 |
Commercial and floor plans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 1,360.9 |
2019 | 216.9 |
2018 | 175.9 |
2017 | 108.7 |
2016 | 63.9 |
Prior | 121.6 |
Revolving Loans Amortized Cost Basis | 252.1 |
Total | 2,300.0 |
Commercial purpose secured by 1-4 family |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 41.0 |
2019 | 72.8 |
2018 | 49.1 |
2017 | 28.1 |
2016 | 20.2 |
Prior | 50.8 |
Revolving Loans Amortized Cost Basis | 20.8 |
Total | 282.8 |
Agriculture Portfolio Segment [Member] |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 42.4 |
2019 | 32.7 |
2018 | 20.8 |
2017 | 8.1 |
2016 | 4.4 |
Prior | 2.1 |
Revolving Loans Amortized Cost Basis | 170.6 |
Total | 281.1 |
Loans held for investment |  | 279,100,000
Residential 1-4 family |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 191.0 |
2019 | 129.6 |
2018 | 84.3 |
2017 | 73.3 |
2016 | 86.2 |
Prior | 309.7 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 874.1 |
Consumer Home Equity and HELOC |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 8.7 |
2019 | 10.6 |
2018 | 10.5 |
2017 | 13.2 |
2016 | 5.7 |
Prior | 16.8 |
Revolving Loans Amortized Cost Basis | 348.0 |
Total | 413.5 |
Pass |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 8,548,800,000
Pass | Non-owner occupied |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 257.6 |
2019 | 326.4 |
2018 | 224.7 |
2017 | 120.7 |
2016 | 169.4 |
Prior | 385.0 |
Revolving Loans Amortized Cost Basis | 20.0 |
Total | 1,503.8 |
Pass | Commercial Real Estate |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 3,305,000,000.0
Pass | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 60.2 |
2019 | 83.4 |
2018 | 50.3 |
2017 | 36.5 |
2016 | 11.1 |
Prior | 32.5 |
Revolving Loans Amortized Cost Basis | 5.3 |
Total | 279.3 |
Loans held for investment |  | 295,400,000
Pass | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 52.5 |
2019 | 99.5 |
2018 | 26.0 |
2017 | 6.4 |
2016 | 0.3 |
Prior | 0.3 |
Revolving Loans Amortized Cost Basis | 59.7 |
Total | 244.7 |
Loans held for investment |  | 241,000,000.0
Pass | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 96.0 |
2019 | 231.9 |
2018 | 85.7 |
2017 | 22.4 |
2016 | 9.8 |
Prior | 0.5 |
Revolving Loans Amortized Cost Basis | 10.7 |
Total | 457.0 |
Loans held for investment |  | 428,300,000
Pass | Total construction |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 964,700,000
Pass | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 1,235,400,000
Pass | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 24.4 |
2019 | 52.1 |
2018 | 32.1 |
2017 | 20.2 |
2016 | 15.0 |
Prior | 34.0 |
Revolving Loans Amortized Cost Basis | 6.3 |
Total | 184.1 |
Loans held for investment |  | 185,700,000
Pass | Real Estate Loan |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 5,690,800,000
Pass | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 781,500,000
Pass | Direct consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 177,700,000
Pass | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 81,600,000
Pass | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 1,040,800,000
Pass | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 1,569,400,000
Pass | Owner occupied |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 219.9 |
2019 | 333.3 |
2018 | 232.7 |
2017 | 160.3 |
2016 | 178.5 |
Prior | 445.1 |
Revolving Loans Amortized Cost Basis | 15.5 |
Total | 1,585.3 |
Pass | Commercial and floor plans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 1,344.6 |
2019 | 196.5 |
2018 | 166.4 |
2017 | 105.5 |
2016 | 53.8 |
Prior | 115.2 |
Revolving Loans Amortized Cost Basis | 236.3 |
Total | 2,218.3 |
Pass | Commercial purpose secured by 1-4 family |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 40.5 |
2019 | 67.1 |
2018 | 44.2 |
2017 | 27.0 |
2016 | 18.4 |
Prior | 47.8 |
Revolving Loans Amortized Cost Basis | 20.2 |
Total | 265.2 |
Pass | Agriculture Portfolio Segment [Member] |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 33.8 |
2019 | 28.8 |
2018 | 15.5 |
2017 | 6.5 |
2016 | 4.0 |
Prior | 1.3 |
Revolving Loans Amortized Cost Basis | 154.4 |
Total | 244.3 |
Loans held for investment |  | 247,800,000
Other Assets Especially Mentioned |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 157,500,000
Other Assets Especially Mentioned | Non-owner occupied |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 3.2 |
2018 | 1.3 |
2017 | 0.1 |
2016 | 0.5 |
Prior | 15.4 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 20.5 |
Other Assets Especially Mentioned | Commercial Real Estate |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 84,700,000
Other Assets Especially Mentioned | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0.5 |
2019 | 0.1 |
2018 | 0.1 |
2017 | 1.0 |
2016 | 0 |
Prior | 1.2 |
Revolving Loans Amortized Cost Basis | 0.2 |
Total | 3.1 |
Loans held for investment |  | 3,800,000
Other Assets Especially Mentioned | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 0 |
Loans held for investment |  | 900,000
Other Assets Especially Mentioned | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 1.5 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 1.5 |
Loans held for investment |  | 1,700,000
Other Assets Especially Mentioned | Total construction |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 6,400,000
Other Assets Especially Mentioned | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 2,600,000
Other Assets Especially Mentioned | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 1.6 |
2019 | 2.8 |
2018 | 1.3 |
2017 | 2.2 |
2016 | 0.4 |
Prior | 3.9 |
Revolving Loans Amortized Cost Basis | 1.0 |
Total | 13.2 |
Loans held for investment |  | 14,300,000
Other Assets Especially Mentioned | Real Estate Loan |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 108,000,000.0
Other Assets Especially Mentioned | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 200,000
Other Assets Especially Mentioned | Direct consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 400,000
Other Assets Especially Mentioned | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 0
Other Assets Especially Mentioned | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 600,000
Other Assets Especially Mentioned | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 40,400,000
Other Assets Especially Mentioned | Owner occupied |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 2.9 |
2019 | 7.1 |
2018 | 7.5 |
2017 | 0.9 |
2016 | 9.5 |
Prior | 13.9 |
Revolving Loans Amortized Cost Basis | 0.3 |
Total | 42.1 |
Other Assets Especially Mentioned | Commercial and floor plans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 6.0 |
2019 | 1.6 |
2018 | 1.0 |
2017 | 2.4 |
2016 | 5.1 |
Prior | 0.3 |
Revolving Loans Amortized Cost Basis | 4.0 |
Total | 20.4 |
Other Assets Especially Mentioned | Commercial purpose secured by 1-4 family |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0.3 |
2019 | 2.0 |
2018 | 0.3 |
2017 | 0.6 |
2016 | 0.5 |
Prior | 1.2 |
Revolving Loans Amortized Cost Basis | 0.4 |
Total | 5.3 |
Other Assets Especially Mentioned | Agriculture Portfolio Segment [Member] |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 2.7 |
2019 | 1.7 |
2018 | 0.4 |
2017 | 0.1 |
2016 | 0.1 |
Prior | 0.4 |
Revolving Loans Amortized Cost Basis | 7.6 |
Total | 13.0 |
Loans held for investment |  | 8,500,000
Substandard |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 224,000,000.0
Substandard | Non-owner occupied |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 15.6 |
2019 | 2.8 |
2018 | 0.4 |
2017 | 1.3 |
2016 | 1.3 |
Prior | 14.6 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 36.0 |
Substandard | Commercial Real Estate |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 97,300,000
Substandard | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0.3 |
2019 | 0.1 |
2018 | 1.2 |
2017 | 0.6 |
2016 | 0 |
Prior | 0.2 |
Revolving Loans Amortized Cost Basis | 0.4 |
Total | 2.8 |
Loans held for investment |  | 1,900,000
Substandard | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0.3 |
2019 | 0 |
2018 | 1.2 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 1.5 |
Loans held for investment |  | 2,200,000
Substandard | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0.8 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0.1 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 0.9 |
Loans held for investment |  | 1,500,000
Substandard | Total construction |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 5,600,000
Substandard | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 7,800,000
Substandard | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0.1 |
2019 | 8.9 |
2018 | 3.5 |
2017 | 1.0 |
2016 | 3.5 |
Prior | 5.8 |
Revolving Loans Amortized Cost Basis | 2.1 |
Total | 24.9 |
Loans held for investment |  | 26,600,000
Substandard | Real Estate Loan |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 137,300,000
Substandard | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 2,900,000
Substandard | Direct consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 800,000
Substandard | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 0
Substandard | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 3,700,000
Substandard | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 60,300,000
Substandard | Owner occupied |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 6.1 |
2019 | 7.2 |
2018 | 9.7 |
2017 | 5.6 |
2016 | 18.7 |
Prior | 18.6 |
Revolving Loans Amortized Cost Basis | 0.5 |
Total | 66.4 |
Substandard | Commercial and floor plans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 8.4 |
2019 | 13.2 |
2018 | 8.3 |
2017 | 0.7 |
2016 | 4.9 |
Prior | 3.5 |
Revolving Loans Amortized Cost Basis | 11.5 |
Total | 50.5 |
Substandard | Commercial purpose secured by 1-4 family |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0.2 |
2019 | 3.6 |
2018 | 4.5 |
2017 | 0.5 |
2016 | 1.3 |
Prior | 1.8 |
Revolving Loans Amortized Cost Basis | 0.1 |
Total | 12.0 |
Substandard | Agriculture Portfolio Segment [Member] |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 5.9 |
2019 | 2.1 |
2018 | 4.9 |
2017 | 1.4 |
2016 | 0.3 |
Prior | 0.4 |
Revolving Loans Amortized Cost Basis | 8.6 |
Total | 23.6 |
Loans held for investment |  | 22,700,000
Doubtful |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 5,900,000
Doubtful | Non-owner occupied |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0.2 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 0.2 |
Doubtful | Commercial Real Estate |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 800,000
Doubtful | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0.1 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 0.1 |
Loans held for investment |  | 1,000,000.0
Doubtful | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 0 |
Loans held for investment |  | 0
Doubtful | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0.4 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 0.4 |
Loans held for investment |  | 0
Doubtful | Total construction |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 1,000,000.0
Doubtful | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 300,000
Doubtful | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 2.0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 2.0 |
Loans held for investment |  | 0
Doubtful | Real Estate Loan |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 2,100,000
Doubtful | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 0
Doubtful | Direct consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 100,000
Doubtful | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 0
Doubtful | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 100,000
Doubtful | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 3,600,000
Doubtful | Owner occupied |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0.2 |
2019 | 0 |
2018 | 0.2 |
2017 | 0.1 |
2016 | 0.4 |
Prior | 0.1 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 1.0 |
Doubtful | Commercial and floor plans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 1.9 |
2019 | 5.6 |
2018 | 0.2 |
2017 | 0.1 |
2016 | 0.1 |
Prior | 2.6 |
Revolving Loans Amortized Cost Basis | 0.3 |
Total | 10.8 |
Doubtful | Commercial purpose secured by 1-4 family |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0.1 |
2018 | 0.1 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0.1 |
Total | 0.3 |
Doubtful | Agriculture Portfolio Segment [Member] |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0.1 |
2018 | 0 |
2017 | 0.1 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 0.2 |
Loans held for investment |  | 100,000
Total Criticized Loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 387,400,000
Total Criticized Loans | Commercial Real Estate |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 182,800,000
Total Criticized Loans | Land acquisition & development |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 6,700,000
Total Criticized Loans | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 3,100,000
Total Criticized Loans | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 3,200,000
Total Criticized Loans | Total construction |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 13,000,000.0
Total Criticized Loans | Residential |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 10,700,000
Total Criticized Loans | Agricultural |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 40,900,000
Total Criticized Loans | Real Estate Loan |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 247,400,000
Total Criticized Loans | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 3,100,000
Total Criticized Loans | Direct consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 1,300,000
Total Criticized Loans | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 0
Total Criticized Loans | Total consumer loans |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 4,400,000
Total Criticized Loans | Commercial |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | 104,300,000
Total Criticized Loans | Agriculture Portfolio Segment [Member] |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
Loans held for investment |  | $ 31,300,000
Performing | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 184.7 |
2019 | 238.8 |
2018 | 152.5 |
2017 | 100.4 |
2016 | 67.7 |
Prior | 56.8 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 800.9 |
Performing | Direct consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 29.8 |
2019 | 39.4 |
2018 | 39.9 |
2017 | 17.0 |
2016 | 8.0 |
Prior | 11.2 |
Revolving Loans Amortized Cost Basis | 23.5 |
Total | 168.8 |
Performing | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 136.4 |
Performing | Multi-family |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 68.5 |
2019 | 76.7 |
2018 | 31.0 |
2017 | 30.4 |
2016 | 27.8 |
Prior | 101.5 |
Revolving Loans Amortized Cost Basis | 2.6 |
Total | 338.5 |
Performing | Residential 1-4 family |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 191.0 |
2019 | 129.2 |
2018 | 84.3 |
2017 | 73.3 |
2016 | 86.2 |
Prior | 309.0 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 873.0 |
Performing | Consumer Home Equity and HELOC |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 8.7 |
2019 | 10.6 |
2018 | 10.5 |
2017 | 13.2 |
2016 | 5.7 |
Prior | 16.4 |
Revolving Loans Amortized Cost Basis | 347.8 |
Total | 412.9 |
Nonperforming | Indirect consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0.4 |
2018 | 0.2 |
2017 | 0.1 |
2016 | 0.1 |
Prior | 0.2 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 1.0 |
Nonperforming | Direct consumer |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0.1 |
2018 | 0.1 |
2017 | 0.1 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0.2 |
Total | 0.5 |
Nonperforming | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 1.7 |
Nonperforming | Multi-family |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 0 |
Nonperforming | Residential 1-4 family |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0.4 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0.7 |
Revolving Loans Amortized Cost Basis | 0 |
Total | 1.1 |
Nonperforming | Consumer Home Equity and HELOC |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0.4 |
Revolving Loans Amortized Cost Basis | 0.2 |
Total | 0.6 |
Agriculture Portfolio Segment [Member] | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 1.7 |
Agriculture Portfolio Segment [Member] | Performing | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 1.7 |
Agriculture Portfolio Segment [Member] | Nonperforming | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 0 |
Commercial | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 65.8 |
Commercial | Performing | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 64.7 |
Commercial | Nonperforming | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 1.1 |
Total consumer loans | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 70.6 |
Total consumer loans | Performing | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | 70.0 |
Total consumer loans | Nonperforming | Credit card |  |
Loans and Leases Receivable Recorded Investment, Criticized Loans [Line Items] |  |
2020 | $ 0.6 |

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