XML 52 R42.htm IDEA: XBRL DOCUMENT v3.21.2
Debt - Summary (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Debt    
Total debt $ 433,484 $ 433,484
Unamortized debt discount and issuance costs (41,189) (47,967)
Net long-term debt 392,295 385,517 [1]
2023 Notes | Convertible subordinated notes    
Debt    
Total debt 240,984 240,984
2025 Notes | Convertible subordinated notes    
Debt    
Total debt $ 192,500 $ 192,500
[1] Consolidated balance sheet as of December 31, 2020 has been derived from audited consolidated financial statements.