Summary of Significant Accounting Policies - Summary of Premises and Equipment (Details) |
9 Months Ended |
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Sep. 30, 2021 | |
| Land improvements | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, useful life | 3 years |
| Land improvements | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, useful life | 10 years |
| Office building and improvements | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, useful life | 10 years |
| Office building and improvements | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, useful life | 40 years |
| Furniture and equipment | Minimum | |
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, useful life | 3 years |
| Furniture and equipment | Maximum | |
| Property, Plant and Equipment [Line Items] | |
| Property, plant and equipment, useful life | 10 years |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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