Debt (Tables)

12 Months Ended

Dec. 31, 2022

Debt

Schedule of debt

At December 31, 2022, debt was comprised of the following:

					Debt
			Unaccreted		Issuance		Carrying
	Principal		Discount		Costs		Value
Convertible senior notes, due 2026	$	425,000	$	—	$	(8,508)	$	416,492
Advance funding arrangement		15,670		(760)		—		14,910
Term loan facility, due 2029		10,000		—		—		10,000
Other notes		450		(87)		—		363
	$	451,120	$	(847)	$	(8,508)	$	441,765

At December 31, 2021, debt was comprised of the following:

					Debt
			Unaccreted		Issuance		Carrying
	Principal		Discount		Costs		Value
Convertible senior notes, due 2026	$	425,000	$	—	$	(10,785)	$	414,215
Other notes		600		(80)		—		520
	$	425,600	$	(80)	$	(10,785)	$	414,735

Schedule of minimum principal payment commitments

Minimum principal payment commitments as of December 31, 2022, are as follows:

	Principal
	Payments
2023	$	17,215
2024		1,545
2025		1,545
2026		426,395
2027		1,395
Thereafter		3,025
	$	451,120