SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Accounting for Income Taxes) (Details)	Dec. 31, 2013
Income Tax Contingency [Line Items]
Percentage of benefit from tax position that will be realized upon settlement, greater than	50.00%

Percentage of benefit from tax position that will be realized upon settlment.

No definition available.

Name:	rexi_PercentageOfBenefitFromTaxPositionThatWillBeRealizedUponSettlment
Namespace Prefix:	rexi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant