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Convertible Notes (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt instrument
Total convertible notes	$ 73,860	$ 163,687
1.375% Convertible senior notes due 2023 | Convertible senior notes
Debt instrument
Face value	74,011	172,500
Unamortized discount	0	(8,266)
Unamortized debt issuance costs	(151)	(547)
Total convertible notes	73,860	163,687
Less current portion	73,860	163,687
Total long-term convertible notes	0	0
Face value	64,604	$ 172,500
Debt instrument, carrying value and related conversion premium	24,600
1.375% Convertible senior notes due 2023 | Convertible senior notes | Remainder after completion of 2023 Notes Partial Repurchase
Debt instrument
Face value	$ 49,400

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