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Premises and Equipment - Narrative (Details) - Land Acquisition - SPF15, Inc. $ in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 25, 2019 USD ($) | Dec. 31, 2018 USD ($) a parcel
Property, Plant and Equipment [Line Items] |  |
Area of land |  | 3.3
Payments to acquire land | $ |  | $ 10.2
Number of additional parcels of land transferred | parcel |  | 2
Proceeds from purchase price reimbursement | $ | $ 11.1 |
Fishers Town Hall Building Corporation |  |
Property, Plant and Equipment [Line Items] |  |
Area of land |  | 0.75
Third Parties |  |
Property, Plant and Equipment [Line Items] |  |
Area of land |  | 1.65

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- Definition The cash outflow from the acquisition of real estate intended to generate income for the owner; excludes land acquired for use by the owner. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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