SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Loans) (Details) (Investment in Real Estate Loan [Member])	12 Months Ended
Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period of non-accrual for charge off	1 year
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of days delinquent	90 days

Loans Receivable, Past Due Period Before Write Off

No definition available.

Name:	rexi_LoansReceivablePastPeriodBeforeWriteOff
Namespace Prefix:	rexi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration