Convertible Senior Notes - Interest Expense Recognized (Details) - Senior Notes - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Senior Notes due 2026
Debt Instrument [Line Items]
Contractual interest expense	$ 0	$ 0	$ 0	$ 0
Amortization of issuance costs	310	657	635	1,307
Total interest expense	310	657	635	1,307
Senior Notes due 2025
Debt Instrument [Line Items]
Contractual interest expense	182	219	398	434
Amortization of issuance costs	621	740	1,353	1,472
Total interest expense	$ 803	$ 959	$ 1,751	$ 1,906