Earnings / (Loss) Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Schedule of Earnings / (Loss) Per Common Share
Net income / (loss) attributable to IFMI	$ (2,078)	$ (3,371)	$ (5,937)	$ (2,996)
Add / (deduct): Income / (loss) attributable to the non-controlling interest attributable to Operating LLC membership units exchangeable into IFMI shares	(981)	(1,633)	(2,883)	(1,595)
Add / (deduct): Adjustment for income tax benefit / (expense)	(23)	6	(39)	150
Net income / (loss) on a fully converted basis	$ (3,082)	$ (4,998)	$ (8,859)	$ (4,441)
Weighted average common shares outstanding - Basic	10,756,257	10,901,448	10,600,004	10,860,702
Unrestricted Operating LLC membership units exchangeable into IFMI shares	5,252,002	5,283,556	5,252,002	5,283,556
Weighted average common shares outstanding - Diluted	16,008,259	16,185,004	15,852,006	16,144,258
Net income / (loss) per common share - Basic	$ (0.19)	$ (0.31)	$ (0.56)	$ (0.28)
Net income / (loss) per common share - Diluted	$ (0.19)	$ (0.31)	$ (0.56)	$ (0.28)