XML 69 R53.htm IDEA: XBRL DOCUMENT v3.20.2
Convertible Senior Notes - Carrying Amount (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Jun. 11, 2020
Debt Instrument [Line Items]    
Carrying amount of Convertible Notes $ 183,999  
2.75% Convertible Senior Notes due 2027    
Debt Instrument [Line Items]    
Aggregate principle amount 287,500 $ 287,500
Less: Unamortized debt discount and debt issuance costs (103,501)  
Carrying amount of Convertible Notes $ 183,999