v3.19.1
Convertible Notes - Carrying and fair value (Details) - Convertible Notes
$ in Thousands
Mar. 31, 2019
USD ($)
Convertible Notes  
Par value of the Convertible Notes $ 201,250
Unamortized debt discounts (43,052)
Unamortized debt issuance costs (4,315)
Net carrying value of Convertible Notes 153,883
Fair value of Convertible Notes $ 181,552