XML 120 R107.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Permanent Equity (Future Conversion / Redemption of Operating LLC Units) (Details) - shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Permanent Equity [Line Items] |  |  |  |
Vesting of units |  | 132,450 | 90,135 |
Stock Issued During Period, Shares, New Issues | 212,121 | 186,342 | 2,935,506 |
Institutional Financial Markets, Inc. [Member] |  |  |  |
Permanent Equity [Line Items] |  |  |  |
Vesting of units |  | 132,450 | 90,135 |
IFMI, LLC [Member] |  |  |  |
Permanent Equity [Line Items] |  |  |  |
Common Unit, Outstanding | 18,553,430 | 20,341,309 | 19,895,748 | 16,457,628
Membership Units Received Net Of Surrenders |  |  | 2,749,167 |
Unit Issuance And Surrender Agreement [Member] | IFMI, LLC [Member] |  |  |  |
Permanent Equity [Line Items] |  |  |  |
Membership Units Received Net Of Surrenders | 212,121 | 459,219 | 502,614 |
Daniel G. Cohen and Other Unit Holders [Member] | IFMI, LLC [Member] |  |  |  |
Permanent Equity [Line Items] |  |  |  |
Common Unit, Outstanding | 5,324,090 | 5,324,090 |  |
Daniel G. Cohen [Member] | IFMI, LLC [Member] |  |  |  |
Permanent Equity [Line Items] |  |  |  |
Common Unit, Outstanding | 4,983,557 | 4,983,557 | 4,983,557 | 4,983,557
Institutional Financial Markets, Inc. [Member] | IFMI, LLC [Member] |  |  |  |
Permanent Equity [Line Items] |  |  |  |
Common Unit, Outstanding | 13,229,340 | 15,017,219 | 14,571,658 | 11,133,538
Institutional Financial Markets, Inc. [Member] | Unit Issuance And Surrender Agreement [Member] | IFMI, LLC [Member] |  |  |  |
Permanent Equity [Line Items] |  |  |  |
Membership Units Received Net Of Surrenders | 212,121 | 459,219 | 502,614 |
Other Unit Holders [Member] | IFMI, LLC [Member] |  |  |  |
Permanent Equity [Line Items] |  |  |  |
Common Unit, Outstanding | 340,533 | 340,533 | 340,533 | 340,533

X
- Definition Membership Units Received Net Of Surrenders + References No definition available. + Details
Name: | ifmi_MembershipUnitsReceivedNetOfSurrenders
Namespace Prefix: | ifmi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Permanent equity. + References No definition available. + Details
Name: | ifmi_PermanentEquityLineItems
Namespace Prefix: | ifmi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of shares from equity based awards that vested during the period. + References No definition available. + Details
Name: | ifmi_VestingOfShares
Namespace Prefix: | ifmi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of common units of ownership outstanding of a limited liability company (LLC). + References No definition available. + Details
Name: | us-gaap_CommonUnitOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=us-gaap_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ifmi_IfmiLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=ifmi_UnitIssuanceAndSurrenderAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncentiveDistributionMadeToManagingMemberOrGeneralPartnerAxis=ifmi_DanielGCohenAndOtherUnitHoldersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncentiveDistributionMadeToManagingMemberOrGeneralPartnerAxis=ifmi_DanielGCohenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncentiveDistributionMadeToManagingMemberOrGeneralPartnerAxis=us-gaap_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncentiveDistributionMadeToManagingMemberOrGeneralPartnerAxis=ifmi_OtherUnitHoldersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |