Debt (Tables)

12 Months Ended

Dec. 31, 2020

Debt

Schedule of debt

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

At December 31, 2019, debt was comprised of the following:

					Debt
			Unaccreted		Issuance		Carrying
	Principal		Discount		Costs		Value
10% convertible promissory notes, due on demand	$	7,324	$	(36)	$	—	$	7,288
6% promissory note, due 2020		185		—		—		185
2.55% promissory notes, due 2020		1,100		(41)		—		1,059
3.5% convertible promissory notes, due 2022		1,689		(313)		—		1,376
9.0% term loan, due 2023		40,500		(528)		(689)		39,283
3% promissory note (25% default), due 2024		3,000		(2,906)		(57)		37
Other notes		233		—		—		233
	$	54,031	$	(3,824)	$	(746)	$	49,461

			Fair
	Principal		Value
10% convertible notes recorded at fair value	$	5,500	$	11,659

Minimum principal payment commitments as of December 31, 2020, are as follows:

	Principal
	Payments
2021	$	4,799
2022		12,234
2023		20,346
2024		13,302
2025		150
Thereafter		—
	$	50,831

Schedule of minimum principal payment commitments

			Fair
	Principal		Value
10% convertible notes recorded at fair value	$	5,500	$	11,659