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Earnings / (Loss) Per Common Share (Schedule of Earnings / (Loss) Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share [Line Items]
Net income / (loss) attributable to IFMI	$ (4,079)	$ (2,585)	$ (13,318)
Add/ (deduct): Income / (loss) attributable to non-controlling interest attributable to Operating LLC membership	(1,589)	(1,087)	(6,592)
Add / (deduct): Adjustment	103	185	876
Net income / (loss) on a fully converted basis	$ (5,565)	$ (3,487)	$ (19,034)
Weighted average common shares outstanding - Basic	14,790,828	14,998,620	12,340,468
Unrestricted Operating LLC membership units	5,324,090	5,324,130	5,324,090
Weighted average common shares outstanding - Diluted	20,114,918	20,322,750	17,664,558
Net income / (loss) per common share - Basic	$ (0.28)	$ (0.17)	$ (1.08)
Net income / (loss) per common share - Diluted	$ (0.28)	$ (0.17)	$ (1.08)
Number of shares issuable upon conversion of each unit	1
Number of trading days used to determine average share price	10 days
8.00% Contingent Convertible Senior Notes Due 2018 [Member] | Contingent Convertible Senior Notes [Member]
Earnings Per Share [Line Items]
Note rate	8.00%
Stock Compensation Plan [Member]
Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	12,630	121,914	395,457
Convertible Debt Securities [Member]
Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,749,167	2,749,167	732,115

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