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Deferred Contract Incentive (Details) - National Financial Services LLC [Member] - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2021 | Dec. 31, 2022
Deferred Contract Incentive (Details) [Line Items] |  |  |
Business development credit | $ 3,000,000 |  |
Contra expense | 213,000 | $ 213,000 |
Deferred contract incentive | $ 1,800,000 |  | $ 2,000,000

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- Definition Contra expense during the period. + References No definition available. + Details
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Namespace Prefix: | sieb_
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- Definition Deferred contract incentive. + References No definition available. + Details
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Namespace Prefix: | sieb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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- Definition Business development involves the development of products and services, their delivery, design and their implementation. Business development includes a number of techniques designed to grow an economic enterprise. Such techniques include, but are not limited to, assessments of marketing opportunities and target markets, intelligence gathering on customers and competitors, generating leads for possible sales, follow-up sales activity, formal proposal writing and business model design. Business development involves evaluating a business and then realizing its full potential, using such tools as marketing, sales, information management and customer service. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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Balance Type: | debit
Period Type: | duration

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- Details
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Data Type: | na
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Period Type: |