XML 58 R47.htm IDEA: XBRL DOCUMENT v3.24.2.u1

Fair Value Measurements (Details) - Schedule of U.S. Government Securities Market Values and Maturity Dates - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Schedule of U.S. Government Securities Market Values and Maturity Dates [Line Items]
Total Market value of investment in U.S. government securities	$ 101,894,000	$ 133,268,000
Maturing in 2024 [Member]
Schedule of U.S. Government Securities Market Values and Maturity Dates [Line Items]
Total Market value of investment in U.S. government securities	92,483,000	98,931,000
Maturing in 2025 [Member]
Schedule of U.S. Government Securities Market Values and Maturity Dates [Line Items]
Total Market value of investment in U.S. government securities	3,958,000	3,965,000
Maturing in 2026 [Member]
Schedule of U.S. Government Securities Market Values and Maturity Dates [Line Items]
Total Market value of investment in U.S. government securities	5,010,000
Maturing in 2027 [Member]
Schedule of U.S. Government Securities Market Values and Maturity Dates [Line Items]
Total Market value of investment in U.S. government securities	58,000
Maturing after 2027 [Member]
Schedule of U.S. Government Securities Market Values and Maturity Dates [Line Items]
Total Market value of investment in U.S. government securities	332,000
Accrued interest [Member]
Schedule of U.S. Government Securities Market Values and Maturity Dates [Line Items]
Total Market value of investment in U.S. government securities	$ 53,000	257,000
Maturing in 2023 [Member]
Schedule of U.S. Government Securities Market Values and Maturity Dates [Line Items]
Total Market value of investment in U.S. government securities		30,000,000
Maturing after 2025 [Member]
Schedule of U.S. Government Securities Market Values and Maturity Dates [Line Items]
Total Market value of investment in U.S. government securities		$ 115,000

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

+ Details

Name:	us-gaap_DebtSecuritiesHeldtomaturityAllowanceForCreditLossLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

+ References

No definition available.

+ Details

Name:	us-gaap_MoneyMarketFundsAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=sieb_MaturingAfterInTwoThousandTwentyFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=sieb_MaturingInTwoThousandTwentyFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=sieb_MaturingInTwoThousandTwentySixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=sieb_MaturingInTwoThousandTwentySevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=sieb_MaturingAfterInTwoThousandTwentySixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=sieb_AccruedInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=sieb_MaturingInTwoThousandTwentyThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=sieb_MaturingAfterInTwoThousandTwentyFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: