MORTGAGE INVESTMENTS, LOAN PARTICIPATIONS AND LOAN SALES (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2013
Movement in Mortgage Loans on Real Estate [Roll Forward]
Principal outstanding, beginning balances	$ 124,048
Principal Outstanding, Additions:
Principal outstanding, principal fundings - cash	473
Principal outstanding, principal fundings - asset sale financing	1,085
Principal outstanding, revenue recognized in excess of cash received	0
Principal Outstanding, Reductions:
Principal outstanding, principal repayments	(8,617)
Principal outstanding, recovery of allowance for credit losses	0
Principal outstanding, foreclosure/transfer to real estate owned	(87,032)
Principal outstanding, ending balances	29,957
Interest receivable, beginning balances	849
Additions, Interest Receivable:
Principal fundings - cash, interest receivable	0
Interest receivable, principal fundings - asset sale financing	0
Interest receivable, revenue recognized in excess of cash received	556
Reductions, Interest Receivable:
Accrued interest receivable, principal repayments	(831)
Interest receivable, recovery of allowance for credit losses	0
Interest receivable, foreclosure/transfer to real estate owned	0
Interest receivable, ending balances	574
Valuation allowance, beginning balances	(51,600)
Valuation Allowance, Additions:
Valuation allowance, principal fundings - cash	0
Valuation allowance, principal fundings - asset sale financing	0
Valuation allowance, revenue recognized in excess of cash received	0
Valuation Allowance, Reductions:
Valuation allowance, principal repayments	0
Valuation allowance, recovery of allowance for credit losses	6,700
Valuation allowance, foreclosure/transfer to real estate owned	26,907
Valuation allowance, ending balances	(17,993)
Mortgage loans, beginning balances, carrying value	73,297
Net Carrying Value, Additions :
Principal fundings - cash, carrying value	473
Principal fundings - asset sale financing, carrying value	1,085
Carrying value, revenue recognized in excess of cash received	556
Net Carrying Value, Reductions :
Principal repayments, carrying value	(9,448)
Recovery of allowance for credit losses, carrying value	6,700
Carrying value, foreclosure/transfer to real estate owned	(60,125)
Mortgage loans, ending balances, carrying value	$ 12,538

Carrying value, foreclosure/transfer to real estate owned

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- Definition

The amount of allowances for credit losses recovered during the reporting period.

+ References

No definition available.

+ Details

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- Definition

Interest receivable, foreclosure/transfer to real estate owned

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

It represents the loans under new mortgage on real estate, interest will be receivable during the period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Representing the interest receivable from principal repayments during the period.

+ References

No definition available.

+ Details

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

- Definition

It represents the loans under new mortgage on real estate, interest recognized in excess of cash received.

+ References

No definition available.

+ Details

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

- Definition

Representing the interest receivable from recovery of allowances for credit losses.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Details

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- Definition

It represents the loans under mortgage on real estate, interest will be receivable during the period.

+ References

No definition available.

+ Details

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- Definition

These lines represents interest receivable from assets sale financing

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Total principal amount of mortgage loans as of the balance sheet date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

This represents the outstanding principal amount of mortgage loans.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The principal outstanding amount collected on mortgage loans on real estate during the reporting period.

+ References

No definition available.

+ Details

Name:	ifcn_MortgageLoansOnRealEstatePrincipalCollectionsOfPrincipal
Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Mortgage loans on real estate, principal fundings including interest, cash.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents mortgage loans on real estate, principal outstanding, principal fundings, cash.

+ References

No definition available.

+ Details

Name:	ifcn_MortgageLoansOnRealEstatePrincipalOutstandingPrincipalFundingsCash
Namespace Prefix:	ifcn_
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- Definition

Mortgage loans on real estate, revenue Recognized in excess of cash received.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

These lines are represents valuations allowance for principle funding of assets sale financing.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

These lines are represents principle funding cash of valuation allowance.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
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- Definition

Principal outstanding, foreclosure/transfer to real estate owned

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

These lines represents revenue recognised in excess of cash received in principle outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents mortgage loans on real estate, principal outstanding, recovery of allowance for credit losses.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Valuation allowance, foreclosure/transfer to real estate owned

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the valuation allowance pertaining to principal repayments.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

These lines are represents cash received in excess of recognised.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Increase in valuation allowance of mortgage loan on real estate due to recovery allowances of credit losses.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifcn_
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Balance Type:	debit
Period Type:	duration

- Definition

The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 60

-Paragraph 47

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 310

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6873192&loc=d3e21338-158488

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Period Type:	instant

- Definition

Total carrying amount of mortgage loans as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule IV)

-URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 29

-Article 12

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule IV

-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 310

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-29.6)

-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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- Definition

The amount of principal collected on mortgage loans on real estate during the reporting period.

+ References

+ Details

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- Definition

Total amount of new mortgage loans on real estate during the reporting period.

+ References

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