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Commitments and Contingencies - Employment Agreements (Details) - USD ($)
 1 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2015
Executive Non-renewal Charge    
Charges in connection with the non-renewal of agreement $ 3,800,000  
Non-cash expenses related to stock award compensation $ 800,000  
Agreements with Executive Officers and Key Employees    
Future minimum commitments under agreements with executive officers and key employees    
2016   $ 6,000,000
2017   1,200,000
Total   7,200,000
Kasbar agreement    
Loss contingencies    
Annual base salary   $ 750,000
Term of extension in expiration period under the specified condition   1 year
Minimum period prior to expiration of the term for serving specified notice to prevent extension of the agreement term   1 year
Severance payment for termination following a change of control   $ 5,000,000
Severance payment for termination following other scenarios   $ 3,000,000
Period for severance payment after termination of executive's employment   2 years
Accrued expenses and other current liabilities    
Executive Non-renewal Charge    
Unpaid amount of cash portion of the executive non-renewal charge   $ 800,000
Other long-term liabilities    
Executive Non-renewal Charge    
Unpaid amount of cash portion of the executive non-renewal charge   $ 1,900,000