XML 131 R111.htm IDEA: XBRL DOCUMENT v3.8.0.1

Note 21 - Stockholders' Equity (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)
Threshold Percentage of Net Profits Exceeded by Dividends Declared, Any Calendar Year	75.00%
Threshold Percentage of Net Profits Exceeded by Dividends Declared, Combined with Preceding Year	75.00%
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval	$ 7.5
Common Equity Tier 1 Capital Required for Capital Adequacy to Risk Weighted Assets	4.50%
Capital Conservation Buffer	2.50%
Capital Conservation Buffer Phase In Amount	0.625%

X

- Definition

An additional amount held in risk-based capital designed to ensure that banks build up capital buffers outside periods of stress which can be drawn down as losses are incurred. The requirement is based on simple capital conservation rules designed to avoid breaches of minimum capital requirements.

+ References

No definition available.

+ Details

Name:	sfnc_CapitalConservationBuffer
Namespace Prefix:	sfnc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount resulting from the phase-in of a capital conservation buffer.

+ References

No definition available.

+ Details

Name:	sfnc_CapitalConservationBufferPhaseInAmount
Namespace Prefix:	sfnc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The minimum common equity tier 1 risk based capital ratio (common equity tier 1 capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

+ References

No definition available.

+ Details

Name:	sfnc_CommonEquityTier1CapitalRequiredForCapitalAdequacyToRiskWeightedAssets
Namespace Prefix:	sfnc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Threshold by which dividends declared exceeds a percentage of net profits in any calendar year.

+ References

No definition available.

+ Details

Name:	sfnc_ThresholdPercentageOfNetProfitsExceededByDividendsDeclaredAnyCalendarYear
Namespace Prefix:	sfnc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Threshold by which dividends declared exceeds a percentage of net profits in any calendar year, combined with percentage of retained net profits of the preceding year.

+ References

No definition available.

+ Details

Name:	sfnc_ThresholdPercentageOfNetProfitsExceededByDividendsDeclaredCombinedWithPrecedingYear
Namespace Prefix:	sfnc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of dividends that can be declared or paid without approval of regulatory agency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant