XML 81 R56.htm IDEA: XBRL DOCUMENT
v3.20.4

Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | Oct. 31, 2019 | Apr. 12, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Oct. 30, 2019 | Apr. 11, 2019
--- | --- | --- | --- | --- | --- | ---
Liabilities Assumed |  |  |  |  |  |
Goodwill |  |  | $ 1,075,305 | $ 1,055,520 |  |
Landrum Company |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] |  |  |  |  |  |
Cash and due from banks | $ 215,285 |  |  |  | $ 215,285 |
Due from banks - time | 248 |  |  |  | 248 |
Investment securities | 1,025,983 |  |  |  | 1,021,755 |
Loans acquired | 2,005,486 |  |  |  | 2,049,137 |
Allowance for loan losses | 0 |  |  |  | (22,736) |
Foreclosed assets | 190 |  |  |  | 373 |
Premises and equipment | 82,659 |  |  |  | 63,878 |
Bank owned life insurance | 19,206 |  |  |  | 19,206 |
Goodwill | 0 |  |  |  | 407 |
Other assets | 20,634 |  |  |  | 33,924 |
Total assets acquired | 3,399,152 |  |  |  | 3,381,889 |
Liabilities Assumed |  |  |  |  |  |
Non-interest bearing transaction accounts | 716,675 |  |  |  | 716,675 |
Interest bearing transaction accounts and savings deposits | 1,465,429 |  |  |  | 1,465,429 |
Time deposits | 867,496 |  |  |  | 867,197 |
Total deposits | 3,049,600 |  |  |  | 3,049,301 |
Other borrowings | 10,055 |  |  |  | 10,055 |
Subordinated debentures | 33,917 |  |  |  | 34,794 |
Accrued interest and other liabilities | 40,926 |  |  |  | 31,057 |
Total liabilities assumed | 3,134,498 |  |  |  | 3,125,207 |
Total equity assumed | 0 |  |  |  | 256,682 |
Total liabilities and equity assumed | 3,134,498 |  |  |  | 3,381,889 |
Net assets acquired | 264,654 |  |  |  |  |
Purchase price | 415,779 |  |  |  |  |
Goodwill | 151,125 |  | 131,300 |  |  |
Landrum Company | Core deposit intangible |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] |  |  |  |  |  |
Core deposit intangible | 24,345 |  |  |  | 0 |
Landrum Company | Other intangibles |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] |  |  |  |  |  |
Core deposit intangible | 5,116 |  |  |  | $ 412 |
Landrum Company | Fair Value Adjustments |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] |  |  |  |  |  |
Cash and due from banks | 0 |  |  |  |  |
Due from banks - time | 0 |  |  |  |  |
Investment securities | 4,228 |  |  |  |  |
Loans acquired | (43,651) |  |  |  |  |
Allowance for loan losses | 22,736 |  |  |  |  |
Foreclosed assets | (183) |  |  |  |  |
Premises and equipment | 18,781 |  |  |  |  |
Bank owned life insurance | 0 |  |  |  |  |
Goodwill | (407) |  |  |  |  |
Other assets | (13,290) |  |  |  |  |
Total assets acquired | 17,263 |  |  |  |  |
Liabilities Assumed |  |  |  |  |  |
Non-interest bearing transaction accounts | 0 |  |  |  |  |
Interest bearing transaction accounts and savings deposits | 0 |  |  |  |  |
Time deposits | 299 |  |  |  |  |
Total deposits | 299 |  |  |  |  |
Other borrowings | 0 |  |  |  |  |
Subordinated debentures | (877) |  |  |  |  |
Accrued interest and other liabilities | 9,869 |  |  |  |  |
Total liabilities assumed | 9,291 |  |  |  |  |
Total equity assumed | (256,682) |  |  |  |  |
Total liabilities and equity assumed | (247,391) |  |  |  |  |
Landrum Company | Fair Value Adjustments | Core deposit intangible |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] |  |  |  |  |  |
Core deposit intangible | 24,345 |  |  |  |  |
Landrum Company | Fair Value Adjustments | Other intangibles |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] |  |  |  |  |  |
Core deposit intangible | $ 4,704 |  |  |  |  |
Reliance Bancshares, Inc. |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] |  |  |  |  |  |
Cash and due from banks |  | $ 25,693 |  |  |  | $ 25,693
Due from banks - time |  | 502 |  |  |  | 502
Investment securities |  | 286,110 |  |  |  | 287,983
Loans acquired |  | 1,096,870 |  |  |  | 1,138,527
Allowance for loan losses |  | 0 |  |  |  | (10,808)
Foreclosed assets |  | 5,912 |  |  |  | 11,092
Premises and equipment |  | 29,451 |  |  |  | 32,452
Bank owned life insurance |  | 39,348 |  |  |  | 39,348
Core deposit intangible |  | 18,350 |  |  |  | 0
Other assets |  | 32,076 |  |  |  | 25,165
Total assets acquired |  | 1,534,312 |  |  |  | 1,549,954
Liabilities Assumed |  |  |  |  |  |
Non-interest bearing transaction accounts |  | 108,812 |  |  |  | 108,845
Interest bearing transaction accounts and savings deposits |  | 639,798 |  |  |  | 639,798
Time deposits |  | 476,657 |  |  |  | 478,415
Total deposits |  | 1,225,267 |  |  |  | 1,227,058
Total deposits |  | 14,146 |  |  |  | 14,146
Other borrowings |  | 157,400 |  |  |  | 162,900
Accrued interest and other liabilities |  | 8,453 |  |  |  | 8,185
Total liabilities assumed |  | 1,405,266 |  |  |  | 1,412,289
Total equity assumed |  | 0 |  |  |  | 137,665
Total liabilities and equity assumed |  | 1,405,266 |  |  |  | $ 1,549,954
Net assets acquired |  | 129,046 |  |  |  |
Purchase price |  | 207,539 |  |  |  |
Goodwill |  | 78,493 | $ 78,500 |  |  |
Reliance Bancshares, Inc. | Fair Value Adjustments |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract] |  |  |  |  |  |
Cash and due from banks |  | 0 |  |  |  |
Due from banks - time |  | 0 |  |  |  |
Investment securities |  | (1,873) |  |  |  |
Loans acquired |  | (41,657) |  |  |  |
Allowance for loan losses |  | 10,808 |  |  |  |
Foreclosed assets |  | (5,180) |  |  |  |
Premises and equipment |  | (3,001) |  |  |  |
Bank owned life insurance |  | 0 |  |  |  |
Core deposit intangible |  | 18,350 |  |  |  |
Other assets |  | 6,911 |  |  |  |
Total assets acquired |  | (15,642) |  |  |  |
Liabilities Assumed |  |  |  |  |  |
Non-interest bearing transaction accounts |  | (33) |  |  |  |
Interest bearing transaction accounts and savings deposits |  | 0 |  |  |  |
Time deposits |  | (1,758) |  |  |  |
Total deposits |  | (1,791) |  |  |  |
Total deposits |  | 0 |  |  |  |
Other borrowings |  | (5,500) |  |  |  |
Accrued interest and other liabilities |  | 268 |  |  |  |
Total liabilities assumed |  | (7,023) |  |  |  |
Total equity assumed |  | (137,665) |  |  |  |
Total liabilities and equity assumed |  | $ (144,688) |  |  |  |

X
- Definition Represents bank owned life insurance acquired in business acquisition. + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of foreclosed assets recognized as of the acquisition date. + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedForeclosedAssets
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Goodwill + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedGoodwill
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents total liabilities and equity assumed in business acquisition. + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAndEquityAssumed
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of deposit recognized as of the acquisition date. + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesDeposits
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents interest bearing transaction accounts and savings deposits acquired in business acquisition. + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesInterestBearingTransactionAccountsAndSavingsDeposits
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents non interest bearing transaction accounts acquired in business acquisition. + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesOtherNoninterestBearingTransactionAccounts
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents time deposits acquired in business acquisition. + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesTimeDeposits
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of other borrowings, assumed at the acquisition date. + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherBorrowings
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents securities sold under an agreement to repurchase in a business acquisition. + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSecuritiesSoldUnderAgreementToRepurchase
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of subordinated debentures, assumed at the acquisition date. + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSubordinatedDebentures
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Interest Bearing Balances Due From Bank + References No definition available. + Details
Name: | sfnc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedInterestBearingBalancesDueFromBank
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the best estimate at the acquisition date of the contractual cash flows not expected to be collected, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationAcquiredReceivablesEstimatedUncollectible
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationAcquiredReceivablesGrossContractualAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=121600890&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=121600890&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=121600890&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=sfnc_LandrumCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=sfnc_CoreDepositPremiumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_OtherIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_NonrecurringAdjustmentAxis=sfnc_FairValueAdjustmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=sfnc_RelianceBancsharesInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |