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Loans - Schedule of Loans Renegotiated in Troubled Debt Restructurings (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) note | Dec. 31, 2018 USD ($) note | Dec. 31, 2017 USD ($) note | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend | $ 0 | $ 0 |  | $ 0 |  |
Loans renegotiated in troubled debt restructurings | 24,900,000 | 24,900,000 | $ 23,400,000 |  |  |
Loans renegotiated in troubled debt restructurings, non-accrual loans | 19,400,000 | 19,400,000 | 17,800,000 |  |  |
Loans renegotiated in troubled debt restructurings, accrual loans | 5,500,000 | $ 5,500,000 | $ 5,600,000 |  |  |
Number of notes under troubled debt restructurings | note |  | 11 | 5 | 24 |  |
Concessions in troubled debt restructurings, amount |  |  | $ 4,100,000 | $ 12,900,000 |  |
Charge-offs directly related to modified loans | $ 0 |  |  |  | $ 0 | $ 0
Schedule of Recorded Investment in Past Due Loans by Class |  | The following tables present the contractual aging of the Company’s recorded investment in past due loans by class as of the period indicated:
|  |  |  | Total Loans |  |  |
| 30 - 59 | 60 - 89 | > 90 | 30 or More |  |  |
| Days | Days | Days | Days | Current | Non-accrual | Total
As of December 31, 2019 | Past Due | Past Due | Past Due | Past Due | Loans | Loans | Loans
Real estate |  |  |  |  |  |  |
Commercial | $ | 5.5 |  | $ | 1.1 |  | $ | 0.6 |  | $ | 7.2 |  | $ | 3,464.5 |  | $ | 13.0 |  | $ | 3,484.7 |
Construction: |  |  |  |  |  |  |
Land acquisition & development | 0.7 |  | 0.8 |  | 0.3 |  | 1.8 |  | 298.9 |  | 1.4 |  | 302.1 |
Residential | 1.5 |  | 0.8 |  | — |  | 2.3 |  | 241.8 |  | — |  | 244.1 |
Commercial | — |  | — |  | — |  | — |  | 431.0 |  | 0.5 |  | 431.5 |
Total construction loans | 2.2 |  | 1.6 |  | 0.3 |  | 4.1 |  | 971.7 |  | 1.9 |  | 977.7 |
Residential | 3.8 |  | 1.4 |  | 1.1 |  | 6.3 |  | 1,535.2 |  | 4.6 |  | 1,546.1 |
Agricultural | 0.8 |  | 0.5 |  | — |  | 1.3 |  | 220.1 |  | 5.2 |  | 226.6 |
Total real estate loans | 12.3 |  | 4.6 |  | 2.0 |  | 18.9 |  | 6,191.5 |  | 24.7 |  | 6,235.1 |
Consumer: |  |  |  |  |  |  |  |
Indirect consumer | 7.6 |  | 1.9 |  | 0.5 |  | 10.0 |  | 773.0 |  | 1.6 |  | 784.6 |
Other consumer | 1.2 |  | 0.5 |  | 0.1 |  | 1.8 |  | 176.7 |  | 0.5 |  | 179.0 |
Credit card | 0.8 |  | 0.5 |  | 0.8 |  | 2.1 |  | 79.5 |  | — |  | 81.6 |
Total consumer loans | 9.6 |  | 2.9 |  | 1.4 |  | 13.9 |  | 1,029.2 |  | 2.1 |  | 1,045.2 |
Commercial | 4.8 |  | 2.6 |  | 2.3 |  | 9.7 |  | 1,347.9 |  | 13.7 |  | 1,371.3 |
Agricultural | 0.9 |  | 0.1 |  | — |  | 1.0 |  | 275.7 |  | 2.4 |  | 279.1 |
Other, including overdrafts | — |  | — |  | — |  | — |  | — |  | — |  | — |
Loans held for investment | 27.6 |  | 10.2 |  | 5.7 |  | 43.5 |  | 8,844.3 |  | 42.9 |  | 8,930.7 |
Mortgage loans originated for sale | — |  | — |  | — |  | — |  | 100.9 |  | — |  | 100.9 |
Total loans | $ | 27.6 |  | $ | 10.2 |  | $ | 5.7 |  | $ | 43.5 |  | $ | 8,945.2 |  | $ | 42.9 |  | $ | 9,031.6 |
|  |  |  | Total Loans |  |  |
| 30 - 59 | 60 - 89 | > 90 | 30 or More |  |  |
| Days | Days | Days | Days | Current | Non-accrual | Total
As of December 31, 2018 | Past Due | Past Due | Past Due | Past Due | Loans | Loans | Loans
Real estate |  |  |  |  |  |  |
Commercial | $ | 10.4 |  | $ | 1.0 |  | $ | 0.8 |  | $ | 12.2 |  | $ | 3,214.0 |  | $ | 9.2 |  | $ | 3,235.4 |
Construction: |  |  |  |  |  |  |
Land acquisition & development | 1.6 |  | 0.1 |  | 0.2 |  | 1.9 |  | 316.0 |  | 3.7 |  | 321.6 |
Residential | 1.0 |  | 0.4 |  | — |  | 1.4 |  | 240.4 |  | 1.0 |  | 242.8 |
Commercial | 0.4 |  | — |  | — |  | 0.4 |  | 273.7 |  | 0.2 |  | 274.3 |
Total construction loans | 3.0 |  | 0.5 |  | 0.2 |  | 3.7 |  | 830.1 |  | 4.9 |  | 838.7 |
Residential | 8.8 |  | 1.1 |  | 0.2 |  | 10.1 |  | 1,525.3 |  | 6.6 |  | 1,542.0 |
Agricultural | 2.2 |  | — |  | — |  | 2.2 |  | 202.6 |  | 12.6 |  | 217.4 |
Total real estate loans | 24.4 |  | 2.6 |  | 1.2 |  | 28.2 |  | 5,772.0 |  | 33.3 |  | 5,833.5 |
Consumer: |  |  |  |  |  |  |  |  |
Indirect consumer | 6.8 |  | 2.1 |  | 0.4 |  | 9.3 |  | 776.8 |  | 1.7 |  | 787.8 |
Other consumer | 1.4 |  | 0.5 |  | 0.1 |  | 2.0 |  | 198.1 |  | 0.5 |  | 200.6 |
Credit card | 0.9 |  | 0.4 |  | 0.8 |  | 2.1 |  | 79.7 |  | — |  | 81.8 |
Total consumer loans | 9.1 |  | 3.0 |  | 1.3 |  | 13.4 |  | 1,054.6 |  | 2.2 |  | 1,070.2 |
Commercial | 8.3 |  | 1.2 |  | 1.3 |  | 10.8 |  | 1,283.7 |  | 15.8 |  | 1,310.3 |
Agricultural | 2.1 |  | 0.3 |  | — |  | 2.4 |  | 249.4 |  | 3.0 |  | 254.8 |
Other, including overdrafts | — |  | — |  | — |  | — |  | 1.6 |  | — |  | 1.6 |
Loans held for investment | 43.9 |  | 7.1 |  | 3.8 |  | 54.8 |  | 8,361.3 |  | 54.3 |  | 8,470.4 |
Mortgage loans originated for sale | — |  | — |  | — |  | — |  | 33.3 |  | — |  | 33.3 |
Total loans | $ | 43.9 |  | $ | 7.1 |  | $ | 3.8 |  | $ | 54.8 |  | $ | 8,394.6 |  | $ | 54.3 |  | $ | 8,503.7 |
Schedule of Loans Renegotiated in Troubled Debt Restructurings |  | The following table presents information on the Company’s troubled debt restructurings that occurred during the periods indicated:
|  | Number of Notes |  | Type of Concession | Principal Balance at Restructure Date
Year Ended December 31, 2019 |  |  | Interest only period | Extension of terms or maturity | Interest rate adjustment | Other
Commercial real estate |  | 4 |  |  | $ | 0.2 |  | $ | 0.2 |  | $ | — |  | $ | 2.9 |  | $ | 3.3 |
Commercial |  | 1 |  |  | — |  | — |  | — |  | 5.0 |  | 5.0 |
Agriculture |  | 6 |  |  | — |  | — |  | — |  | 2.1 |  | 2.1 |
Total loans restructured |  | 11 |  |  | $ | 0.2 |  | $ | 0.2 |  | $ | — |  | $ | 10.0 |  | $ | 10.4 |
|  | Number of Notes |  | Type of Concession | Principal Balance at Restructure Date
Year Ended December 31, 2018 |  |  | Interest only period | Extension of terms or maturity | Interest rate adjustment | Other
Commercial real estate |  | 3 |  |  | $ | 3.6 |  | $ | — |  | $ | — |  | $ | — |  | $ | 3.6 |
Agriculture real estate |  | 1 |  |  | — |  | — |  | — |  | 0.2 |  | 0.2 |
Consumer |  | 1 |  |  | — |  | — |  | — |  | 0.3 |  | 0.3 |
Total loans restructured |  | 5 |  |  | $ | 3.6 |  | $ | — |  | $ | — |  | $ | 0.5 |  | $ | 4.1 |
|  | Number of Notes |  | Type of Concession | Principal Balance at Restructure Date
Year Ended December 31, 2017 |  |  | Interest only period | Extension of terms or maturity | Interest rate adjustment | Other
Commercial |  | 17 |  |  | $ | 1.2 |  | $ | 2.0 |  | $ | — |  | $ | 6.0 |  | $ | 9.2 |
Agriculture |  | 1 |  |  | — |  | 0.1 |  | — |  | — |  | 0.1 |
Total loans restructured |  | 24 |  |  | $ | 2.7 |  | $ | 3.3 |  | $ | — |  | $ | 6.9 |  | $ | 12.9 |
Financing Receivable, Troubled Debt Restructuring, Postmodification |  | $ 10,400,000 |  |  |  |
Commercial |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Number of notes under troubled debt restructurings | note |  | 4 | 3 |  |  |
Concessions in troubled debt restructurings, amount |  |  | $ 3,600,000 |  |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification |  | $ 3,300,000 |  |  |  |
Agricultural |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Number of notes under troubled debt restructurings | note |  |  | 1 |  |  |
Concessions in troubled debt restructurings, amount |  |  | $ 200,000 |  |  |
Total consumer loans |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Number of notes under troubled debt restructurings | note |  |  | 1 |  |  |
Concessions in troubled debt restructurings, amount |  |  | $ 300,000 |  |  |
Commercial |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Number of notes under troubled debt restructurings | note |  | 1 |  | 17 |  |
Concessions in troubled debt restructurings, amount |  | $ 5,000,000.0 |  | $ 9,200,000 |  |
Balance of notes for which there was a payment default |  |  |  | $ 1,300,000 |  |
Agriculture |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Number of notes under troubled debt restructurings | note |  | 6 |  |  |  |
Concessions in troubled debt restructurings, amount |  | $ 2,100,000 |  |  |  |
Agricultural |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Number of notes under troubled debt restructurings | note |  |  |  | 1 |  |
Concessions in troubled debt restructurings, amount |  |  |  | $ 100,000 |  |
Interest Only Period Concession |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 3,600,000 | 2,700,000 |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification |  | 200,000 |  |  |  |
Interest Only Period Concession | Commercial |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 3,600,000 |  |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification |  | 200,000 |  |  |  |
Interest Only Period Concession | Agricultural |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 0 |  |  |
Interest Only Period Concession | Total consumer loans |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 0 |  |  |
Interest Only Period Concession | Commercial |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  | 0 |  | 1,200,000 |  |
Interest Only Period Concession | Agriculture |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  | 0 |  |  |  |
Interest Only Period Concession | Agricultural |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  |  | 0 |  |
Extension of terms or maturity |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 0 | 3,300,000 |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification |  | 200,000 |  |  |  |
Extension of terms or maturity | Commercial |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 0 |  |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification |  | 200,000 |  |  |  |
Extension of terms or maturity | Agricultural |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 0 |  |  |
Extension of terms or maturity | Total consumer loans |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 0 |  |  |
Extension of terms or maturity | Commercial |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  | 0 |  | 2,000,000.0 |  |
Extension of terms or maturity | Agriculture |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  | 0 |  |  |  |
Extension of terms or maturity | Agricultural |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  |  | 100,000 |  |
Interest rate adjustment |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 0 | 0 |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification |  | 0 |  |  |  |
Interest rate adjustment | Commercial |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 0 |  |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification |  | 0 |  |  |  |
Interest rate adjustment | Agricultural |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 0 |  |  |
Interest rate adjustment | Total consumer loans |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 0 |  |  |
Interest rate adjustment | Commercial |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  | 0 |  | 0 |  |
Interest rate adjustment | Agriculture |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  | 0 |  |  |  |
Interest rate adjustment | Agricultural |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  |  | 0 |  |
Other |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 500,000 | 6,900,000 |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification |  | 10,000,000.0 |  |  |  |
Other | Commercial |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 0 |  |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification |  | 2,900,000 |  |  |  |
Other | Agricultural |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | 200,000 |  |  |
Other | Total consumer loans |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  | $ 300,000 |  |  |
Other | Commercial |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  | 5,000,000.0 |  | 6,000,000.0 |  |
Other | Agriculture |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  | $ 2,100,000 |  |  |  |
Other | Agricultural |  |  |  |  |  |
Loans and Leases Receivable, Troubled Debt Restructuring |  |  |  |  |  |
Concessions in troubled debt restructurings, amount |  |  |  | $ 0 |  |

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- Definition Tabular disclosure of financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524 + Details
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