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INDEBTEDNESS (Tables)
 9 Months Ended
Sep. 30, 2017
Debt Disclosure [Abstract]  
Convertible Debt
The carrying value of the Notes is as follows as of:
  
(in thousands)
 
September 30,
2017
 
December 31,
2016
 
Principal amount
 
$
143,750
 
$
143,750
 
Unamortized debt discount
 
 
(15,637)
 
 
(20,644)
 
Deferred financing costs
 
 
(1,829)
 
 
(2,463)
 
Net carrying value
 
$
126,284
 
$
120,643
 
 
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, 2017 and 2016:
 
 
 
Three Months Ended
 
Nine Months Ended
 
(in thousands)
 
September 30,
2017
 
September 30,
2016
 
September 30,
2017
 
September 30,
2016
 
Contractual coupon
 
$
1,078
 
$
1,078
 
$
3,234
 
$
3,234
 
Amortization of debt discount
 
 
1,692
 
 
1,604
 
 
5,007
 
 
4,748
 
Amortization of finance fees
 
 
211
 
 
211
 
 
633
 
 
633
 
Capitalized interest
 
 
(143)
 
 
(58)
 
 
(367)
 
 
(159)
 
 
 
$
2,838
 
$
2,835
 
$
8,507
 
$
8,456