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FAIR VALUE (Narrative) (Details)
Mar. 31, 2015
Security
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Number of securities held 4rexi_NumberofSecuritiesHeld
Debt or Equity Investments in Externally Managed CDOs [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Number of securities held 3rexi_NumberofSecuritiesHeld
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= rexi_DebtorEquityInvestmentsinExternallyManagedCDOsMember
Term Loan [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Number of securities held 1rexi_NumberofSecuritiesHeld
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= rexi_TermLoanMember