FAIR VALUE (Fair Value of Financial Instruments) (Details) - Recurring Basis - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Fair Value
Liabilities:
Real estate debt	$ 10,689	$ 10,618
Senior Notes	12,553	12,202
Other debt	775	870
Total liabilities at fair value	24,017	23,690
Carrying Amount
Liabilities:
Real estate debt	9,822	9,877
Senior Notes	10,000	10,000
Other debt	775	870
Total liabilities at fair value	$ 20,597	$ 20,747

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents the fair value of real estate debt.

No definition available.

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