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Commitments and Contingencies - Other Commitments and Contractual obligations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Contractual obligations and commitments    
Compensation fee $ 5,100  
Severance compensation fee 0 $ 0
Long Term debt Obligations    
Total 206,700  
Less than 1 Year 11,925  
1-2 Years 23,850  
3-5 Years 170,925  
Operating leases    
Total 6,936  
Less than 1 Year 1,038  
1-2 Years 2,061  
3-5 Years 2,309  
More than 5 years 1,528  
Total obligations    
Total 327,642  
Less than 1 Year 107,555  
1-2 Years 45,325  
3-5 Years 173,234  
More than 5 Years 1,528  
Purchase Obligations - Principally employment and consulting services    
Purchase Obligations    
Total 5,104  
Less than 1 Year 3,192  
1-2 Years 1,912  
Purchase Obligations - Major Vendors    
Purchase Obligations    
Total 108,902  
Less than 1 Year 91,400  
1-2 Years $ 17,502