Convertible Senior Notes - Future Minimum Payments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Principal repayments
Convertible senior notes	$ 261,521	$ 140,873
Convertible senior notes
Principal repayments
2023	3,914
2024	7,635
2025	7,635
2026	33,639
2027	6,943
Thereafter	251,915
Total minimum payments	311,681
Less: interest	(43,831)
Less: unamortized issuance costs	(6,329)
Convertible senior notes	261,521
2026 Convertible Notes
Principal repayments
2023	346
2024	692
2025	692
2026	26,696
Total minimum payments	28,426
Less: interest	(2,076)
Less: unamortized issuance costs	(443)
Convertible senior notes	25,907
2029 Convertible Notes
Principal repayments
2023	3,568
2024	6,943
2025	6,943
2026	6,943
2027	6,943
Thereafter	251,915
Total minimum payments	283,255
Less: interest	(41,755)
Less: unamortized issuance costs	(5,886)
Convertible senior notes	$ 235,614

Total minimum payments of debt instrument.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year.

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