XML 48 R29.htm IDEA: XBRL DOCUMENT v3.21.2
Convertible Senior Notes Due 2023 (Tables)
 6 Months Ended
Jun. 30, 2021
Debt Disclosure [Abstract]  
Summary of liability component of 2023 Notes The liability component of the 2023 Notes consists of the following, (dollars in thousands):
June 30,
2021		December 31,
2020
(unaudited) 
2023 Notes$402,500 $402,500 
Unamortized debt discount and deferred financing costs(32,117)(40,749)
Total carrying value$370,383 $361,751 
Fair value (Level 2) $398,727 $383,381