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Fair Value (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Assets:    
Interest rate cap agreement $ 49  
Liabilities:    
Contingently convertible Series E units liability 71,050 66,938
Preferred shares derivative liability 57,420 28,150
Recurring | Significant Other Observable Inputs (Level 2)
    
Assets:    
Interest rate cap agreement 49  
Recurring | Significant Unobservable Inputs (Level 3)
    
Liabilities:    
Contingently convertible Series E units liability 71,050 66,938
Preferred shares derivative liability $ 57,420 $ 28,150