XML 88 R78.htm IDEA: XBRL DOCUMENT
v3.23.1

Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Schedule of Goodwill and Intangible Assets [Line Items] |  |
Closing date of adjustments to goodwill and intangible assets | The adjustments to goodwill and intangible assets during the three months ended March 31, 2023 are primarily attributable to the acquisition of Torreya, which closed on March 1, 2023. |
Amortization of intangible assets | $ 4,437 | $ 5,094
Institutional Group [Member] |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |
Goodwill and Intangible Asset | 59,700 |
Amortization of intangible assets | $ 3,183 |
Customer Relationships [Member] |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |
Weighted-average remaining lives of intangible assets | 8 years 10 months 24 days |
Trade Names [Member] |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |
Weighted-average remaining lives of intangible assets | 7 years 1 month 6 days |
Core Deposits [Member] |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |
Weighted-average remaining lives of intangible assets | 1 year 6 months |
Non-Compete Agreements [Member] |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |
Weighted-average remaining lives of intangible assets | 4 years 2 months 12 days |
Investment Banking Backlog [Member] |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |
Weighted-average remaining lives of intangible assets | 6 years 2 months 12 days |
Torreya Intangibles [Member] |  |
Schedule of Goodwill and Intangible Assets [Line Items] |  |
Weighted-average remaining lives of intangible assets | 4 years 10 months 24 days |

X
- Definition Schedule of goodwill and intangible assets. + References No definition available. + Details
Name: | sf_ScheduleOfGoodwillAndIntangibleAssetsLineItems
Namespace Prefix: | sf_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
Name: | us-gaap_AmortizationOfIntangibleAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance. + References No definition available. + Details
Name: | us-gaap_IntangibleAssetsNetIncludingGoodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The new date of the annual goodwill impairment test. + References No definition available. + Details
Name: | us-gaap_NewDateOfAnnualGoodwillImpairmentTest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=sf_InstitutionalGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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