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Business Combinations, Deconsolidation of Subsidiary, and Disposal Groups Held for Sale (Details) (USD $)
6 Months Ended 1 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Capital and Ownership Restructure
Jun. 30, 2012
Capital and Ownership Restructure
MCS
Jun. 30, 2012
Capital and Ownership Restructure
UBN
Jun. 30, 2012
Capital and Ownership Restructure
UBN
MCS
Jun. 30, 2012
Capital and Ownership Restructure
UBN
Non-affiliated Investor Group
European Acquisition Partnership and European Servicing Entity - Capital and Ownership Restructure              
Ownership interest prior to restructure (as a percent)       37.00% 70.00% 35.00%  
Ownership interest after restructure (as a percent)         38.00% 100.00% 62.00%
Decrease in cash upon deconsolidation $ 2,855,000   $ 2,900,000        
Non-cash decrease in other liabilities (588,000) 461,000 500,000        
Non-cash decrease in noncontrolling interest 8,473,000   8,500,000        
Non-cash decrease to investments in unconsolidated subsidiaries     $ 6,100,000