VARIABLE INTEREST ENTITIES RSO Balance Sheets Detail (Parenthetical) (Details) (RSO [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
RSO [Member]
ASSETS
Loans, pledged as collateral, allowances	$ 17.7	$ 27.5
Variable interest entity, loans, pledged as collateral, allowance	$ 15.2	$ 17.2

The allowance for loan losses represents the reserve to cover probable credit losses related to specifically identified loans, as well as probable credit losses inherent in the remainder of the loan portfolio as of the balance sheet date.

No definition available.

Name:	rexi_LoansReceivableAllowance
Namespace Prefix:	rexi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant