This element represents the number of mortgage loans on real estate that were sold.

No definition available.

Name:	ifcn_MortgageLoansOnRealEstateNumberOfLoansSold
Namespace Prefix:	ifcn_
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Balance Type:	na
Period Type:	duration

- Definition

Weighted average interest rate on mortgage loans.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Mortgage Loans on Real Estate, New Mortgage Loans, Discount

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Mortgage Loans on Real Estate, New Mortgage Loans, Expenses

+ References

No definition available.

+ Details

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- Definition

Mortgage Loans on Real Estate, New Mortgage Loans, Number of Extensions Available

+ References

No definition available.

+ Details

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- Definition

Mortgage Loans on Real Estate, Number of Loans Acquired

+ References

No definition available.

+ Details

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- Definition

Mortgage Loans on Real Estate, Sales, Net off Selling Costs

+ References

No definition available.

+ Details

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

- Definition

Percentage of loans receivable allowance to principal.

+ References

No definition available.

+ Details

Name:	ifcn_PercentageOfValuationAllowanceOnLoansReceivable
Namespace Prefix:	ifcn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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 Accounting Standards Codification
-Topic 944
-SubTopic 310
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=82921503&loc=d3e21338-158488

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	instant

- Definition

The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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Balance Type:	credit
Period Type:	duration

- Definition

Interest and fee income from mortgage loans considered to be held-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.1)
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Period Type:	duration

- Definition

The carrying amount of the outstanding balance due under the mortgage loan.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
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-Paragraph 1
-Subparagraph (SX 210.12-29)
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Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
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-Paragraph 1
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Indicates the number of mortgages under each classification.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 310
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Balance Type:	na
Period Type:	duration

- Definition

Amount of increase (decrease) in mortgage loans on real estate.

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- Definition

The cash inflow from collection of repayments from borrowers on loans that are secured with real estate mortgages and are held with the intention to resell in the near future.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Period Type:	duration

- Details

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- Details

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- Details

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MORTGAGE LOANS, NET (Details Textual)	3 Months Ended		9 Months Ended		12 Months Ended
MORTGAGE LOANS, NET (Details Textual)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Loan	Sep. 30, 2016 USD ($) Loan	Dec. 31, 2016 USD ($) Loan
Mortgage Loans on Real Estate [Line Items]
Decrease in mortgage loans			$ (400,000)	$ 0
Mortgage interest income	$ 350,000	$ 19,000	402,000	332,000
Mortgage loan principal payoffs received			$ 0	$ 7,632,000
Number of mortgage loans sold \| Loan			0	1
Value of mortgage loans sold				$ 3,100,000
Loss on sale of mortgage loan				$ (100,000)
Nonperforming Financing Receivable [Member]
Mortgage Loans on Real Estate [Line Items]
Number of loans (in loans) \| Loan					2
Aggregate average principal and interest balance	0		$ 0
Mortgage Receivable [Member]
Mortgage Loans on Real Estate [Line Items]
Number of loans acquired \| Loan			1
Discount on loans acquired			$ 7,000,000
Value of loans acquired			7,600,000
Expenses of acquired loans			$ 200,000
Number of extensions available for loans acquired			3
Annual interest rate of loans acquired			9.50%
Number of loans (in loans) \| Loan			3		3
Aggregate average principal and interest balance	6,800,000		$ 6,800,000		$ 4,400,000
Valuation allowance	$ 12,700,000		$ 12,700,000		$ 12,700,000
Loans receivable valuation allowance (percentage)	63.80%		63.80%		97.10%
Mortgage Receivable [Member] \| Performing Financing Receivable [Member]
Mortgage Loans on Real Estate [Line Items]
Number of loans (in loans) \| Loan			1		1
Aggregate average principal and interest balance	$ 7,700,000		$ 7,700,000		$ 400,000
Interest rate	9.50%		9.50%		11.00%
Mortgage Receivable [Member] \| Nonperforming Financing Receivable [Member]
Mortgage Loans on Real Estate [Line Items]
Number of loans (in loans) \| Loan			2
Aggregate average principal and interest balance	$ 0		$ 0