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Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Earnout shares liability $ 20,414
Fair Value, Inputs, Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Warrant Liability
Earnout shares liability
Interest Rate Swap Derivative Liability
Marketable Equity Securities 498 428
Short term investments  
Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Warrant Liability
Earnout shares liability
Interest Rate Swap Derivative Liability 25 42
Marketable Equity Securities
Short term investments 25,000  
Fair Value, Inputs, Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Warrant Liability 18,378 31,213
Earnout shares liability 15,429 34,154
Interest Rate Swap Derivative Liability
Marketable Equity Securities
Short term investments