XML 63 R51.htm IDEA: XBRL DOCUMENT
v3.23.3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of securities and other investments owned and securities sold not yet purchased at fair value (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Securities and other investments owned: |  |
Total securities and other investments owned | $ 1,197,587 | $ 1,129,268
Securities sold not yet purchased: |  |
Total securities sold not yet purchased | 7,120 | 5,897
Corporate bonds |  |
Securities and other investments owned: |  |
Total securities and other investments owned | 66,341 | 8,539
Securities sold not yet purchased: |  |
Total securities sold not yet purchased | 4,057 | 1,162
Other fixed income securities |  |
Securities and other investments owned: |  |
Total securities and other investments owned | 3,872 | 3,956
Securities sold not yet purchased: |  |
Total securities sold not yet purchased | 2,605 | 269
Partnership interests and other |  |
Securities and other investments owned: |  |
Total securities and other investments owned | 38,807 | 70,063
Equity securities |  |
Securities and other investments owned: |  |
Total securities and other investments owned | 1,088,567 | 1,046,710
Securities sold not yet purchased: |  |
Total securities sold not yet purchased | $ 458 | $ 4,466

X
- Definition Securities And Other Investments Owned + References No definition available. + Details
Name: | rily_SecuritiesAndOtherInvestmentsOwnedAbstract
Namespace Prefix: | rily_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Securities Sold Not Yet Purchased + References No definition available. + Details
Name: | rily_SecuritiesSoldNotYetPurchasedAbstract
Namespace Prefix: | rily_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial instruments held by a broker-dealer for their own account (proprietary securities) for trading or investment purposes determined by management based upon quoted prices of a financial instrument with similar characteristics or on a valuation technique or model. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481961/940-320-45-2 + Details
Name: | us-gaap_SecurityOwnedAndSoldNotYetPurchasedFairValueSecurityOwned
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of financial instruments sold short by a broker-dealer for their own account (proprietary securities) for trading or investment purposes determined by management based upon quoted prices of a financial instrument with similar characteristics or on a valuation technique or model. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481961/940-320-45-2 + Details
Name: | us-gaap_SecurityOwnedAndSoldNotYetPurchasedFairValueSecuritySoldNotYetPurchased
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis=rily_CorporateBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis=us-gaap_FixedIncomeSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis=rily_PartnershipInterestsAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |