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G - INCOME TAXES (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
G - Income Taxes Details 1
Expected income tax benefit at statutory Federal tax rate (34%)	$ (2,229,000)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ (2,004,000)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ (47,000)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State and local taxes, net of Federal tax effect	(459,000)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	(413,000)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes	22,000us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Increase in valuation allowance	2,551,000us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2,342,000us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Permanent difference	39,000us-gaap_IncomeTaxReconciliationOtherReconcilingItems	46,000us-gaap_IncomeTaxReconciliationOtherReconcilingItems	36,000us-gaap_IncomeTaxReconciliationOtherReconcilingItems
Other	98,000us-gaap_IncomeTaxReconciliationOtherAdjustments	48,000us-gaap_IncomeTaxReconciliationOtherAdjustments	23,000us-gaap_IncomeTaxReconciliationOtherAdjustments
Income tax expense	$ 0SIEB_IncomeTaxExpense	$ 19,000SIEB_IncomeTaxExpense	$ 34,000SIEB_IncomeTaxExpense

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