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INDEBTEDNESS (Tables)
 9 Months Ended
Sep. 30, 2015
Debt Disclosure [Abstract]  
Convertible Debt
The carrying value of the Notes is as follows as of September 30:
 
(in thousands)
 
 
2015
 
Principal amount
 
$
143,750
 
Unamortized debt discount
 
 
(28,557)
 
Net carrying value
 
$
115,193
 
Interest Income and Interest Expense Disclosure
The following table sets forth the components of total interest expense related to the Notes recognized in the accompanying consolidated statements of operations for the three and nine-months ended September 30, 2015:
 
 
 
Three months ended
 
Nine months ended
 
 
 
September 30,
 
September 30,
 
(in thousands)
 
2015
 
2015
 
Contractual coupon
 
$
1,078
 
$
3,234
 
Amortization of debt discount
 
 
1,521
 
 
4,502
 
Amortization of finance fees
 
 
211
 
 
633
 
Capitalized interest
 
 
(11)
 
 
(26)
 
 
 
$
2,799
 
$
8,343