The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Summary of Significant Accounting Policies (Redeemable and Non-Redeemable Non-Controlling Interest) (Details)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
PrinceRidge [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	100.00%	98.00%	70.00%
IFMI, LLC [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	73.20%	67.60%