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EARNINGS PER SHARE (Details Textual)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Earnings Per Share, Basic and Diluted [Line Items]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share, Amount 44,883us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount  
Escrow Subject To Cancellation Adjusted Ebitda [Member]    
Earnings Per Share, Basic and Diluted [Line Items]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share, Amount   50,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= rily_EscrowSubjectToCancellationAdjustedEbitdaMember
Escrow Subject To Cancellation Escrow Claims [Member]    
Earnings Per Share, Basic and Diluted [Line Items]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share, Amount   66,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= rily_EscrowSubjectToCancellationEscrowClaimsMember