Aggregate principal amount of old notes redeemed.

No definition available.

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

- Definition

Contingent convertible senior notes contractual maturity due date.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifmi_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest paid currently percentage.

+ References

No definition available.

+ Details

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

- Definition

Interest Paid In Kind Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	ifmi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Notes repurchase date.

+ References

No definition available.

+ Details

Name:	ifmi_NotesRepurchaseDate
Namespace Prefix:	ifmi_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Notice period to redeem New Notes.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifmi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Principal amount for purpose of redemption of new notes, percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifmi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number APB14-1

-Paragraph 31

-Subparagraph b

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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

- Definition

Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments, excluding current portion.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

+ Details

Name:	us-gaap_JuniorSubordinatedLongTermNotes
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt - Debt Outstanding (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	12 Months Ended
	Jul. 31, 2012	Dec. 31, 2012
Debt Instrument [Line Items]
Aggregate principal amount of Old Notes redeemed	$ 100
Weighted average contractual maturity date for New Notes		2027-05
Principal amount of debt outstanding		8,121
10.50% Contingent Convertible Senior Notes due 2027 [Member]
Debt Instrument [Line Items]
Principal amount of debt outstanding		8,121
Principal amount for purpose of redemption of New Notes, percentage		100.00%
Notes repurchase date		May 15, 2014
Notice period to redeem New Notes		30 days
10.50% Contingent Convertible Senior Notes due 2027 [Member] \| May 15, 2017 [Member]
Debt Instrument [Line Items]
Notes repurchase date		May 15, 2017
10.50% Contingent Convertible Senior Notes due 2027 [Member] \| May 15, 2022 [Member]
Debt Instrument [Line Items]
Notes repurchase date		May 15, 2022
Junior subordinated notes [Member]
Debt Instrument [Line Items]
Principal amount of debt outstanding		48,125
Alesco Capital Trust I [Member]
Debt Instrument [Line Items]
Principal amount of debt outstanding		28,125
Sunset Financial Statutory Trust I [Member]
Debt Instrument [Line Items]
Principal amount of debt outstanding		20,000
Subordinated notes payable [Member]
Debt Instrument [Line Items]
Principal amount of debt outstanding		342
Interest paid currently, percentage		9.00%
Interest paid in kind, percentage		3.00%
VIE trusts [Member] \| Junior subordinated notes [Member]
Debt Instrument [Line Items]
Principal amount of debt outstanding		1,489
Carrying value of junior subordinated notes		0
VIE trusts [Member] \| Alesco Capital Trust I [Member]
Debt Instrument [Line Items]
Principal amount of debt outstanding		870
VIE trusts [Member] \| Sunset Financial Statutory Trust I [Member]
Debt Instrument [Line Items]
Principal amount of debt outstanding		619
VIE trusts [Member] \| Third Parties [Member]
Debt Instrument [Line Items]
Principal amount of debt outstanding		$ 48,125