Debt (Tables)

12 Months Ended

Dec. 31, 2021

Debt

Schedule of debt

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

At December 31, 2020, debt was comprised of the following:

					Debt
			Unaccreted		Issuance		Carrying
	Principal		Discount		Costs		Value
1.0% promissory notes, due 2022	$	8,317	$	—	$	—	$	8,317
11.05% term loan, due 2024		41,764		(2,686)		(29)		39,049
Other notes		750		(133)		—		617
	$	50,831	$	(2,819)	$	(29)	$	47,983

Schedule of minimum principal payment commitments

Minimum principal payment commitments as of December 31, 2021, are as follows:

	Principal
	Payments
2022	$	150
2023		150
2024		150
2025		150
2026		425,000
Thereafter		—
	$	425,600