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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash flows from operating activities: |  |  |
Net loss | $ (6,557,000)us-gaap_NetIncomeLoss | $ (5,912,000)us-gaap_NetIncomeLoss | $ (171,000)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Depreciation and amortization | 267,000 us-gaap_DepreciationAndAmortization | 130,000 us-gaap_DepreciationAndAmortization | 284,000 us-gaap_DepreciationAndAmortization
Gain on the disposition of business sold to affiliate | (1,820,000)us-gaap_GainLossOnSaleOfBusiness |  |
(Income) loss from equity investees | (67,000)SIEB_IncomeLossFromEquityInvestees | 65,000 SIEB_IncomeLossFromEquityInvestees | (806,000)SIEB_IncomeLossFromEquityInvestees
Interest accrued on receivable from business sold to affiliate | (37,000)SIEB_InterestAccruedOnReceivableFromBusinessSoldToAffiliate |  |
Distributions from equity investees | 13,000 us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital | 1,212,000 us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital | 97,000 us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
Write off of software development costs |  |  | 433,000 SIEB_WriteOffOfSoftwareDevelopmentCosts
Impairment of intangibles |  | 300,000 us-gaap_ImpairmentOfIntangibleAssetsFinitelived | 300,000 us-gaap_ImpairmentOfIntangibleAssetsFinitelived
Changes in: |  |  |
Securities owned, at fair value | (82,000)us-gaap_IncreaseDecreaseInSecuritiesBorrowed | (151,000)us-gaap_IncreaseDecreaseInSecuritiesBorrowed | (5,000)us-gaap_IncreaseDecreaseInSecuritiesBorrowed
Receivable from affiliate | (76,000)us-gaap_ProceedsFromCollectionOfLoansReceivable |  |
Receivable from brokers | 317,000 us-gaap_IncreaseDecreaseInBrokerageReceivables | 818,000 us-gaap_IncreaseDecreaseInBrokerageReceivables | (890,000)us-gaap_IncreaseDecreaseInBrokerageReceivables
Prepaid expenses and other assets | 33,000 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 149,000 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | (73,000)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Accounts payable and accrued liabilities | (685,000)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities | 445,000 us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities | (1,183,000)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Net cash used in operating activities | (8,694,000)us-gaap_NetCashProvidedByUsedInOperatingActivities | (2,944,000)us-gaap_NetCashProvidedByUsedInOperatingActivities | (2,014,000)us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash Flows From Investing Activities: |  |  |
Purchase of furniture, equipment and leasehold improvements | (154,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (520,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (262,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Distributions from equity investees | 173,000 us-gaap_IncreaseDecreaseInDueFromRelatedParties | 6,000 us-gaap_IncreaseDecreaseInDueFromRelatedParties |
(Payment) collection of advances made to equity investees |  | (1,000)SIEB_CollectionPaymentOfAdvancesMadeToEquityInvestees | 24,000 SIEB_CollectionPaymentOfAdvancesMadeToEquityInvestees
Net cash provided by/ (used in) investing activities | 19,000 us-gaap_NetCashProvidedByUsedInInvestingActivities | (515,000)us-gaap_NetCashProvidedByUsedInInvestingActivities | (238,000)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash flows from financing activities: |  |  |
Purchase of treasury shares |  | (19,000)us-gaap_PaymentsForRepurchaseOfCommonStock | (13,000)us-gaap_PaymentsForRepurchaseOfCommonStock
Net decrease in cash and cash equivalents | (8,675,000)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (3,478,000)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (2,265,000)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents - beginning of year | 15,424,000 us-gaap_Cash | 18,902,000 us-gaap_Cash | 21,167,000 us-gaap_Cash
Cash and cash equivalents - end of year | 6,749,000 us-gaap_Cash | 15,424,000 us-gaap_Cash | 18,902,000 us-gaap_Cash
Supplemental Cash Flow Disclosures: |  |  |
Income taxes paid (received), net |  | 19,000 us-gaap_IncomeTaxesPaidNet | 34,000 us-gaap_IncomeTaxesPaidNet
Siebert, Brandford, Shank Financial LLC and Subsidiary |  |  |
Cash flows from operating activities: |  |  |
Net loss | 170,747 us-gaap_NetIncomeLoss / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Amortization of discount on obligation due affiliate | 36,641 us-gaap_InvestmentIncomeAmortizationOfDiscount / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Depreciation and amortization | 267,973 us-gaap_DepreciationAndAmortization / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Changes in: |  |  |
Accounts receivable | (1,031,467)us-gaap_IncreaseDecreaseInAccountsReceivable / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Due to/from broker | (2,514,399)us-gaap_IncreaseDecreaseInPayablesToBrokerDealers / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Securities owned, at fair value | 0 us-gaap_IncreaseDecreaseInSecuritiesBorrowed / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Other assets | (54,533)us-gaap_IncreaseDecreaseInOperatingAssets / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Payable to (receivable from) affiliates | 76,056 us-gaap_IncreaseDecreaseDueFromAffiliates / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Bank overdraft | (1,225,779)us-gaap_IncreaseDecreaseInOtherReceivables / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Deferred rent | (72,788)us-gaap_StraightLineRent / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Accounts payable and accrued liabilities | 741,040 us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Net cash used in operating activities | (3,606,509)us-gaap_NetCashProvidedByUsedInOperatingActivities / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Cash Flows From Investing Activities: |  |  |
Purchase of furniture, equipment and leasehold improvements | (89,364)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Cash flows from financing activities: |  |  |
Distributions to members | (26,472)us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberCashDistributionsPaid / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Subordinated borrowings | 9,000,000 us-gaap_ProceedsFromIssuanceOfSubordinatedLongTermDebt / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Subordinated repayments | (5,000,000)us-gaap_RepaymentsOfSubordinatedDebt / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Net cash (used in) provided by financing activities | 3,973,528 us-gaap_NetCashProvidedByUsedInFinancingActivities / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Net decrease in cash and cash equivalents | 277,655 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Cash and cash equivalents - beginning of year | 19,787,407 us-gaap_Cash / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Cash and cash equivalents - end of year | 20,065,062 us-gaap_Cash / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Supplemental Cash Flow Disclosures: |  |  |
Income taxes paid (received), net | 24,323 us-gaap_IncomeTaxesPaidNet / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Interest paid | 100,295 us-gaap_InterestPaid / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Non-cash investing and financing activities: |  |  |
Note payable for purchase of business from affiliate | 1,820,000 SIEB_NotePayableForPurchaseOfBusinessFromAffiliate / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Intangible assets acquired related to business acquired from affiliate issuer relationships | (819,000)SIEB_IntangibleAssetsAcquiredRelatedToBusinessAcquiredFromAffiliateIssuerRelationships / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Goodwill | (1,001,000)SIEB_Goodwill1 / us-gaap_IncomeStatementLocationAxis = SIEB_SbsfOperationsMember |  |
Siebert, Brandford, Shank and Co LLC |  |  |
Cash flows from operating activities: |  |  |
Net loss |  | 192,891 us-gaap_NetIncomeLoss / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | 1,579,176 us-gaap_NetIncomeLoss / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Amortization of discount on obligation due affiliate |  |  |
Depreciation and amortization |  | 250,154 us-gaap_DepreciationAndAmortization / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | 266,093 us-gaap_DepreciationAndAmortization / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Changes in: |  |  |
Accounts receivable |  | 395,913 us-gaap_IncreaseDecreaseInAccountsReceivable / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | (739,538)us-gaap_IncreaseDecreaseInAccountsReceivable / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Due to/from broker |  | (2,328,918)us-gaap_IncreaseDecreaseInPayablesToBrokerDealers / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | 2,323,885 us-gaap_IncreaseDecreaseInPayablesToBrokerDealers / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Securities owned, at fair value |  | 11,264,998 us-gaap_IncreaseDecreaseInSecuritiesBorrowed / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | (11,264,998)us-gaap_IncreaseDecreaseInSecuritiesBorrowed / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Other assets |  | 139,264 us-gaap_IncreaseDecreaseInOperatingAssets / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | 81,554 us-gaap_IncreaseDecreaseInOperatingAssets / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Payable to (receivable from) affiliates |  | 36,929 us-gaap_IncreaseDecreaseDueFromAffiliates / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | (27,506)us-gaap_IncreaseDecreaseDueFromAffiliates / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Bank overdraft |  | 1,225,779 us-gaap_IncreaseDecreaseInOtherReceivables / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember |
Deferred rent |  | (9,740)us-gaap_StraightLineRent / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | (54,848)us-gaap_StraightLineRent / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Accounts payable and accrued liabilities |  | (1,368,577)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | (1,277,796)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Net cash used in operating activities |  | 9,798,693 us-gaap_NetCashProvidedByUsedInOperatingActivities / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | (9,113,978)us-gaap_NetCashProvidedByUsedInOperatingActivities / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Cash Flows From Investing Activities: |  |  |
Purchase of furniture, equipment and leasehold improvements |  | (47,759)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | (63,381)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Cash flows from financing activities: |  |  |
Distributions to members |  | (2,473,529)us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberCashDistributionsPaid / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | (193,792)us-gaap_DistributionMadeToLimitedLiabilityCompanyLLCMemberCashDistributionsPaid / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Subordinated borrowings |  |  |
Subordinated repayments |  |  | (6,000,000)us-gaap_RepaymentsOfSubordinatedDebt / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Net cash (used in) provided by financing activities |  | (2,473,529)us-gaap_NetCashProvidedByUsedInFinancingActivities / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | (6,193,792)us-gaap_NetCashProvidedByUsedInFinancingActivities / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Net decrease in cash and cash equivalents |  | 7,277,405 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | (15,371,151)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Cash and cash equivalents - beginning of year |  | 12,510,002 us-gaap_Cash / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | 27,881,153 us-gaap_Cash / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Cash and cash equivalents - end of year |  | 19,787,407 us-gaap_Cash / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | 12,510,002 us-gaap_Cash / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Supplemental Cash Flow Disclosures: |  |  |
Income taxes paid (received), net |  | 28,177 us-gaap_IncomeTaxesPaidNet / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | 101,517 us-gaap_IncomeTaxesPaidNet / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember
Interest paid |  | $ 48,000 us-gaap_InterestPaid / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember | $ 66,718 us-gaap_InterestPaid / us-gaap_IncomeStatementLocationAxis = SIEB_SbsOperationsMember

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- Definition The increase (decrease) during the reporting period in receivables to be collected from other entities that could exert significant influence over the reporting entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in other amounts due to the reporting entity, which are not otherwise defined in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The increase (decrease) during the reporting period in the aggregate amount of obligations incurred arising from transactions with broker-dealers, such as amounts due on margin and unsettled cash transactions; includes payables to brokers, dealers and clearing organizations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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