XML 64 R50.htm IDEA: XBRL DOCUMENT
v3.23.3

Preparation of Interim Financial Statements (Details) | Sep. 30, 2023 center
--- | ---
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Number of financial centers | 232

X
- Definition Represents the entity's number of financial centers as of the balance sheet date. + References No definition available. + Details
Name: | sfnc_NumberOfFinancialCenters
Namespace Prefix: | sfnc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration