Business Combinations, Sale and Deconsolidation of Subsidiaries, and Noncontrolling Interest (Details 3) (USD $)	3 Months Ended			12 Months Ended		1 Months Ended	3 Months Ended	0 Months Ended
	Jun. 30, 2012	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2011 European Acquisition Partnership	Jun. 30, 2012 Railroad Operation Special Situations Platform	Aug. 31, 2011 Short-line rail services and transload facility Special Situations Platform
Business Combination - Portfolio Asset Acquisition & Resolution Business Segment
Cost of acquisition						$ 600,000
Ownership interest in acquired entity (as a percent)						100.00%
Portfolio assets acquired						2,700,000
Notes payable and accrued liabilities acquired						1,700,000
Intercompany notes payable that were eliminated in consolidation with the entity's consolidated financial statements						900,000
Property and equipment							2,800,000	2,100,000
Trade receivables							500,000
Various other assets							200,000
Purchase price							2,500,000	2,100,000
Intangible assets								200,000
Gain on business combinations	$ 935,000	$ 155,000	$ 278,000	$ 935,000	$ 433,000	$ 300,000	$ 900,000	$ 200,000