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INDEBTEDNESS (Tables)
 12 Months Ended
Dec. 31, 2016
Debt Disclosure [Abstract]  
Convertible Debt
The carrying value of the Notes is as follows as of December 31:
 
(in thousands)
 
2016
 
2015
 
Principal amount
 
$
143,750
 
$
143,750
 
Unamortized debt discount
 
 
(20,644)
 
 
(27,016)
 
Deferred financing costs
 
 
(2,463)
 
 
(3,307)
 
Net Carrying value
 
$
120,643
 
$
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 consolidated statements of earnings for the year ended December 31:
 
(in thousands)
 
2016
 
2015
 
Contractual coupon
 
$
4,312
 
$
4,312
 
Amortization of debt discount
 
 
6,372
 
 
6,043
 
Amortization of finance fees
 
 
844
 
 
844
 
Capitalized interest
 
 
(234)
 
 
(56)
 
 
 
$
11,294
 
$
11,143