Operations and Summary of Significant Accounting Policies - Additional Information (Details) - IBTX	Dec. 09, 2019
Common Stock
Property, Plant and Equipment [Line Items]
Share conversion ratio	1.0311
Preferred Stock
Property, Plant and Equipment [Line Items]
Share conversion ratio	1

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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Period Type:	duration