XML 48 R31.htm IDEA: XBRL DOCUMENT v3.20.1
Convertible Debt (Tables)
 3 Months Ended
Mar. 31, 2020
Debt Disclosure [Abstract]  
Schedule of Outstanding Principal Amount and Carrying Value of Notes
The following table presents the outstanding principal amount and carrying value of the Notes as of the date presented:
 
 
March 31, 2020
 
December 31, 2019
 
 
2017 Notes
 
2018 Notes
 
2019 Notes
 
2017 Notes
 
2018 Notes
 
2019 Notes
 
 
(in thousands)
Principal amounts:
 
 
 
 
 
 
 
 
 
 
 
 
Principal
 
$
431,250

 
$
575,000

 
$
948,750

 
$
431,250

 
$
575,000

 
$
948,750

Unamortized debt discount
 
(54,618
)
 
(154,388
)
 
(268,925
)
 
(59,830
)
 
(161,275
)
 
(277,700
)
Net carrying amount
 
$
376,632

 
$
420,612

 
$
679,825

 
$
371,420

 
$
413,725


$
671,050
Schedule of Interest Expense Related to Notes
The following tables present total interest expense recognized related to the Notes:
 
 
Three Months Ended March 31,
 
 
2020
 
2019
 
 
2017 Notes
 
2018 Notes
 
2019 Notes
 
2017 Notes
 
2018 Notes
 
 
(in thousands)
Contractual interest expense
 
$
404

 
$
1,617

 
$
2,319

 
$
404

 
$
1,617

Interest cost related to amortization of the debt discount
 
$
5,212

 
$
6,887

 
$
8,775

 
$
4,909

 
$
6,344

Total interest expense
 
$
5,616


$
8,504


$
11,094


$
5,313


$
7,961