Components of Convertible Senior Notes (Detail) - USD ($) $ in Thousands |
Apr. 02, 2017 |
Dec. 31, 2016 |
Dec. 12, 2016 |
---|---|---|---|
Debt Instrument | |||
Net Carrying amount of convertible debt | $ 355,937 | $ 352,669 | |
1.25% Convertible Senior Unsecured Notes Due December 15, 2023 | |||
Debt Instrument | |||
Debt Principal | 460,000 | 460,000 | $ 460,000 |
Unamortized discount | 104,063 | 107,331 | |
Net Carrying amount of convertible debt | $ 355,937 | $ 352,669 |