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Fair Value of Financial Instruments (Details 2) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt instrument
Carrying value	$ 73,860	$ 163,687
1.375% Convertible senior notes due 2023 | Convertible senior notes
Debt instrument
Face value	64,604	172,500
Carrying value	73,860	163,687
Fair value	111,856	$ 254,103
1.375% Convertible senior notes due 2023 | Convertible senior notes | Remainder after completion of 2023 Notes Partial Repurchase
Debt instrument
Face value	49,400
1.375% Convertible senior notes due 2023 | Convertible senior notes | Remainder of 2023 Notes Partial Repurchase
Debt instrument
Face value	$ 15,200

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