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Debt (Tables)
 3 Months Ended
Mar. 31, 2017
Debt Disclosure [Abstract]  
Schedule of Debt
The amortized carrying amount of our debt consists of the following (in thousands):
 
March 31,
2017
 
December 31,
2016
Secured Convertible Notes due 2018 (“Deerfield Notes”)
$
113,349

 
$
109,122

Term loan payable
—

 
80,000

Total debt
$
113,349

 
$
189,122
Summary of Interest Expense on Notes
The following is a summary of interest expense for the Deerfield Notes (in thousands):
 
Three Months Ended March 31,
 
2017
 
2016
Stated coupon interest
$
2,068

 
$
1,936

Interest paid in kind
2,068

 
1,936

Amortization of debt discount and debt issuance costs
89

 
93

Total interest expense
$
4,225

 
$
3,965