Notes Payable (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Schedule of Debt

Future principal payments on the notes payable as of December 31, 2019 are as follows (in thousands):

Year ended December 31,
2020	$	—
2021		—
2022		48,077
2023		—
2024		—
Total before unamortized discount and issuance costs		48,077
Less: paid-in-kind interest		(3,284	)
Less: unamortized discount and issuance costs		(1,891	)
Total notes payable	$	42,902