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Debt Instruments (Tables)
 6 Months Ended
Jun. 30, 2017
Debt Instruments  
Schedule of liability components of the Convertible Notes

 

The Convertible Notes consist of the following (in thousands): as of June 30, 2017 and December 31, 2016:

Liability component

 

June 30, 2017

 

December 31, 2016

 

Principal

 

$
250,000

 

$
250,000

 

Less: debt discount (1)

 
(86,314

)
(90,807

)

Less: deferred financing(1)

 
(4,515

)
(4,729

)

 

 

 

 

 

 

Net carrying value of the debt

 

$
159,171

 

$
154,464

 

 

 

 

 

 

 

 

 

 

 

(1)Included in the Consolidated Balance Sheets within Convertible Senior Notes (due 2023) and amortized to interest expense over the remaining life of the Convertible Senior Notes using the effective interest rate method.

Components of total interest expense recognized related to the Convertible Notes

Components (In thousands)

 

Three Months
ended June 30, 2017

 

Six Months
ended June 30, 2017

 

Contractual interest expense

 

$
1,867

 

$
3,754

 

Amortization of deferred financing

 
80

 
222

 

Amortization of debt discount

 
2,232

 
4,493

 

 

 

 

 

 

 

Total

 

$
4,179

 

$
8,469