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INDEBTEDNESS (Tables)
 9 Months Ended
Sep. 30, 2016
Debt Disclosure [Abstract]  
Convertible Debt
The carrying value of the Notes is as follows as of:
 
 
 
September 30,
 
December 31,
 
(in thousands)
 
2016
 
2015
 
Principal amount
 
$
143,750
 
$
143,750
 
Unamortized debt discount
 
 
(22,269)
 
 
(27,016)
 
Deferred financing costs
 
 
(2,674)
 
 
(3,307)
 
Net carrying value
 
$
118,807
 
$
113,427
 
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 unaudited interim condensed consolidated statements of earnings for the three and nine months ended September 30, 2016 and 2015:
 
 
 
Three Months Ended
 
Nine Months Ended
 
 
 
September 30,
 
September 30,
 
September 30,
 
September 30,
 
(in thousands)
 
2016
 
2015
 
2016
 
2015
 
Contractual coupon
 
$
1,078
 
$
1,078
 
$
3,234
 
$
3,234
 
Amortization of debt discount
 
 
1,604
 
 
1,521
 
 
4,748
 
 
4,502
 
Amortization of finance fees
 
 
211
 
 
211
 
 
633
 
 
633
 
Capitalized interest
 
 
(58)
 
 
(11)
 
 
(158)
 
 
(26)
 
 
 
$
2,835
 
$
2,799
 
$
8,457
 
$
8,343