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Borrowings (Tables)
 9 Months Ended
Sep. 30, 2015
Debt Disclosure [Abstract]  
Schedule of Future Minimum Payments under the Loans Payable

Future minimum payments under indebtedness agreements outstanding as of September 30, 2015 are as follows:

 

(in thousands)

As of September 30, 2015:

    4.50% Convertible
Senior Notes		      Loan
Agreement		  

Remainder of 2015

    $ —         $ 1,042   

2016

      5,625         6,251   

2017

      5,625         18,273   

2018

      5,625         25,050   

2019 and thereafter

      136,250         —     
  

 

 

     

 

 

  

Total

      153,125         50,616   

Less interest

      (28,125 )       (9,414 ) 

Less unamortized discount

      (38,392 )       (1,549 ) 

Less current portion

      —           —     
  

 

 

     

 

 

  

Loans payable, net of current portion

    $ 86,608       $ 39,653