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Convertible Senior Notes - Interest Expense Recognized (Details) - Senior Notes - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
2026 Notes
Debt Instrument [Line Items]
Contractual interest expense	$ 0	$ 0	$ 0	$ 0
Amortization of issuance costs	238	556	873	1,863
Total interest expense	238	556	873	1,863
2025 Notes
Debt Instrument [Line Items]
Contractual interest expense	112	220	510	654
Amortization of issuance costs	384	749	1,737	2,221
Total interest expense	$ 496	$ 969	$ 2,247	$ 2,875

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