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Accrued Expenses and Other Current Liabilities (Tables)
9 Months Ended
Sep. 30, 2014
Payables and Accruals [Abstract]  
Schedule of Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consist of the following (in thousands):

 
September 30, 2014
 
December 31, 2013
Clinical trial costs
$
5,601

 
$
3,109

Zuplenz milestone payments
3,222

 

Credit memos for expiring Zuplenz channel inventory
1,384

 

Patient assistance programs and rebates
1,969

 
2,618

Compensation and related benefits
1,946

 
1,999

Professional fees
919

 
713

Royalties
188

 
158

Interest expense
63

 
70

Accrued expenses and other current liabilities
$
15,292

 
$
8,667