XML 76 R65.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Capital Requirements (Details) - USD ($) | Jul. 01, 2024 | Jun. 30, 2024 | Jan. 02, 2024 | Dec. 31, 2023
--- | --- | --- | --- | ---
Capital Requirements [Line Items] |  |  |  |
Net capital |  | $ 1,000,000 |  |
Percentage of aggregate debit balance to net capital |  | 2.00% |  |
Cash |  | $ 128,000,000 |  | $ 158,800,000
Excess deposit requirements amount |  | 1,100,000 |  | 1,000,000
MSCO [Member] |  |  |  |
Capital Requirements [Line Items] |  |  |  |
Net capital |  | $ 60,900,000 |  | $ 56,100,000
Percentage of aggregate debit balance to net capital |  | 70.70% |  | 63.42%
Excess of its required net capital |  | $ 59,200,000 |  | $ 54,300,000
Required net capital |  | 1,700,000 |  | 1,800,000
Cash and securities deposits |  | 213,400,000 |  | 273,100,000
Cash |  | 126,800,000 |  | 157,600,000
Securities deposits |  | 86,600,000 |  | 115,500,000
Cash deposits in excess of minimum requirement | $ 3,200,000 | 27,200,000 | $ 3,200,000 | 26,200,000
Excess deposit requirements amount |  | 186,200,000 |  | 246,900,000
Special reserve account |  | 1,300,000 |  | 1,200,000
Reserve account excess amount |  | 200,000 |  | 200,000
RISE [Member] |  |  |  |
Capital Requirements [Line Items] |  |  |  |
Required net capital |  | 250,000 |  | 250,000
Maximum [Member] | RISE [Member] |  |  |  |
Capital Requirements [Line Items] |  |  |  |
Net capital |  | 1,300,000 |  | 1,300,000
Minimum [Member] | RISE [Member] |  |  |  |
Capital Requirements [Line Items] |  |  |  |
Net capital in excess amount |  | $ 1,000,000 |  | $ 1,000,000

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

X
- Definition Cash deposits in excess of minimum requirement. + References No definition available. + Details
Name: | sieb_CashDepositsInExcessOfMinimumRequirement
Namespace Prefix: | sieb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Minimum cash deposits required. + References No definition available. + Details
Name: | sieb_MinimumCashDepositsRequired
Namespace Prefix: | sieb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Net capital in excess of its minimum requirement. + References No definition available. + Details
Name: | sieb_NetCapitalInExcessOfItsMinimumRequirement
Namespace Prefix: | sieb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Net capital in excess of minimum requirement. + References No definition available. + Details
Name: | sieb_NetCapitalInExcessOfMinimumRequirement
Namespace Prefix: | sieb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of aggregate debit balance to net capital. + References No definition available. + Details
Name: | sieb_PercentageOfAggregateDebitBalanceToNetCapital
Namespace Prefix: | sieb_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of reserve account excess amount. + References No definition available. + Details
Name: | sieb_ReserveAccountExcessAmount
Namespace Prefix: | sieb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of special reserve account. + References No definition available. + Details
Name: | sieb_SpecialReserveAccount
Namespace Prefix: | sieb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of net capital required to be maintained by broker-dealer subsidiary to engage in security transaction, calculated under Aggregate Indebtedness Standard. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Rule 15c3-1 -Number 240 -Section 15c3-1 -Publisher SEC + Details
Name: | srt_MinimumNetCapitalRequiredForBrokerDealerSubsidiary1
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of net capital of broker-dealer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Rule 15c3-1 -Number 240 -Section 15c3-1 -Publisher SEC + Details
Name: | srt_NetCapital
Namespace Prefix: | srt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481372/852-10-55-10 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-12 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section 45 -Paragraph 21 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477796/946-210-45-21 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 20 -SubTopic 210 -Topic 946 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477796/946-210-45-20 + Details
Name: | us-gaap_Cash
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cash deposited in a special reserve account for the exclusive benefit of customers pursuant to SEC Regulations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 210 -Topic 942 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478482/942-210-50-1 + Details
Name: | us-gaap_CashReserveDepositRequiredAndMade
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Securities deposited in a special reserve account for the exclusive benefit of customers pursuant to SEC Regulations. + References No definition available. + Details
Name: | us-gaap_SecuritiesReserveDepositRequiredAndMade
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=sieb_MSCOMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=sieb_RiseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |