XML 127 R107.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 17 - Fair Value Measurements - Fair Value of Financial Assets Measured on a Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Impaired loans (1) (2) (collateral dependent) | [1],[2] | $ 11,229 | $ 17,154
Foreclosed assets and other real estate owned (1) | [2] | 24,093 | 17,806
Fair Value, Inputs, Level 3 [Member] |  |  |
Impaired loans (1) (2) (collateral dependent) | [1],[2] | 11,229 | 17,154
Foreclosed assets and other real estate owned (1) | [2] | 24,093 | 17,806
Fair Value, Inputs, Level 1 [Member] |  |  |
Foreclosed assets and other real estate owned (1) | [2] |  |
Fair Value, Inputs, Level 2 [Member] |  |  |
Foreclosed assets and other real estate owned (1) | [2] |  |
[1] | Specific allocations of $2,195,000 and $2,384,000 were related to the impaired collateral dependent loans for which fair value re-measurements took place during the periods ended December 31, 2017 and 2016, respectively.
[2] | These amounts represent the resulting carrying amounts on the Consolidated Balance Sheets for impaired collateral dependent loans and foreclosed assets and other real estate owned for which fair value re-measurements took place during the period.

X
- Definition The fair value portion of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References No definition available. + Details
Name: | sfnc_ImpairedFinancingReceivableRecordedInvestmentFairValueDisclosure
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of assets classified as held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
Name: | us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |