XML 99 R74.htm IDEA: XBRL DOCUMENT
v3.20.4

Loans and Allowance for Credit Losses - Collateral Dependent Loans (Details) $ in Thousands | Dec. 31, 2020 USD ($)
--- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | $ 69,998
Real Estate Collateral |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 23,554
Energy |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 40,703
Other Collateral |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 5,741
Real Estate | Construction and development |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 1,539
Real Estate | Construction and development | Real Estate Collateral |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 1,539
Real Estate | Construction and development | Energy |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 0
Real Estate | Construction and development | Other Collateral |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 0
Real Estate | Single family residential |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 6,950
Real Estate | Single family residential | Real Estate Collateral |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 6,950
Real Estate | Single family residential | Energy |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 0
Real Estate | Single family residential | Other Collateral |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 0
Real Estate | Other commercial |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 46,444
Real Estate | Other commercial | Real Estate Collateral |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 0
Real Estate | Other commercial | Energy |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 40,703
Real Estate | Other commercial | Other Collateral |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 5,741
Commercial | Commercial |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 15,065
Commercial | Commercial | Real Estate Collateral |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 15,065
Commercial | Commercial | Energy |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | 0
Commercial | Commercial | Other Collateral |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Financing receivable, collateral dependent, amount | $ 0

X
- Definition Financing Receivable, Collateral Dependent, Amount + References No definition available. + Details
Name: | sfnc_FinancingReceivableCollateralDependentAmount
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_RealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=sfnc_SecuredEnergyProductionAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=sfnc_OtherBusinessAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=sfnc_RealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=srt_SingleFamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfnc_OtherCommercialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfnc_CommercialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |