• Filing Date: 2020-03-06
  • Form Type: 10-K
  • Description: Annual report
v3.19.3.a.u2
Long-Term Debt - Summary of Equity and Liability Components of the Convertible Senior Notes (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]    
Principal amount $ 173,695 $ 264,995
Convertible Senior Notes [Member]    
Debt Instrument [Line Items]    
Principal amount 143,750 233,740
Unamortized discount (7,545) (11,316)
Liability component – net carrying value before issuance costs 136,205 222,424
Equity component – conversion, net of offering costs $ 15,151 $ 31,051