Quarterly report pursuant to Section 13 or 15(d)

Convertible Senior Notes (Details)

v3.20.2
Convertible Senior Notes (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2020
Mar. 31, 2018
USD ($)
Jun. 30, 2020
USD ($)
Dec. 31, 2019
USD ($)
Debt Instrument, Redemption [Line Items]        
Proceeds from convertible senior notes   $ 282,200    
Convertible senior notes conversion ratio 0.0631793   0.0632040  
Convertible senior notes     $ 285,515 $ 284,954
Convertible Debt [Member]        
Debt Instrument, Redemption [Line Items]        
Aggregate principal amount     $ 287,500  
Convertible senior notes interest rate per annum     6.25%