VARIABLE INTEREST ENTITIES BORROWINGS (Apidos CLO VIII) (Details) RSO (Apidos CLO VIII Senior Notes [Member], USD $)	Dec. 31, 2012	Oct. 31, 2011
RSO [Member]
Debt Instrument [Line Items]
Closing transaction amount		$ 350,000,000
Face amount of debt issued		317,600,000
Discount to investors		4.40%
Percentage of senior note acquired by unrelated third party (in hundredths)		57.00%
Debt instrument, weighted average interest rate	2.16%
RCC Commercial [Member]
Debt Instrument [Line Items]
Purchased equity interests		$ 15,000,000
Percentage of senior note acquired from VIE (in hundredths)		43.00%

The amount of discount on senior notes issued to investors during the period.

No definition available.

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- Definition

The percentage of senior note acquired by unrelated third party during the period.

+ References

No definition available.

+ Details

Name:	rexi_PercentageOfSeniorNoteAcquiredByUnrelatedThirdPartyInHundredths
Namespace Prefix:	rexi_
Data Type:	num:percentItemType
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Period Type:	instant

- Definition

The percentage of senior note acquired in VIE during the period.

+ References

No definition available.

+ Details

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

- Definition

Purchased equity interests

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The dollar amount of the CDO transaction closed by the company to provide financing for commercial real estate loans and commercial mortgage-backed securities.

+ References

No definition available.

+ Details

Name:	rexi_VariableInterestEntityClosingTransactionAmount
Namespace Prefix:	rexi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

+ Details

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Balance Type:	credit
Period Type:	instant

- Details

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Period Type:	duration

- Definition

Weighted average interest rate of long-term debt outstanding.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant