XML 38 R36.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Convertible Notes (Tables)
 12 Months Ended
Dec. 31, 2019
Debt Disclosure [Abstract]  
Convertible Notes

The Notes consisted of the following at December 31 (in thousands):

 
2019
2018
Outstanding principal
$
171,500

$
171,500

Unamortized debt discount
(39,042
)
(48,430
)
Unamortized debt issuance
(2,415
)
(2,996
)
Net carrying amount of the liability component
$
130,043

$
120,074