Convertible Notes Payable (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Summary of Balances Recognized upon Issuance of Convertible Notes

The following balances were recognized upon issuance of the Convertible Notes during the years ended December 31, 2020 and 2019:

	For the year ended December 31
	2019				2020
	Phase I		Phase II		Phase I		Phase II		Total
Convertible notes payable	$	40,587	$	35,973	$	510	$	31,793	$	108,863
Discount, original issuance	(20,946)		(23,982)		(340)		(21,196)		$	(66,464)
Premium (Discount), embedded derivative	181		(1,145)		—		(411)		$	(1,375)
Discount, fair value of preferred units	—		(2,031)		—		(1,759)		$	(3,790)
Discount, beneficial conversion features	(1,799)		—		—		—		$	(1,799)
Convertible notes payable, net	$	18,023	$	8,815	$	170	$	8,427	$	35,435

The balances attributable to the Convertible Notes immediately prior to the Merger were as follows:

	Phase 1		Phase 2		Pre-Merger balance
Convertible notes payable	$	41,097	$	67,766	$	108,863
Discount, original issuance	(21,286)		(45,178)		(66,464)
Discount, embedded derivative	181		(1,556)		(1,375)
Discount, fair value of preferred units	—		(3,790)		(3,790)
Discount, beneficial conversion features	(1,799)		—		(1,799)
Discount, accumulated amortization	22,904		50,524		73,428
Convertible notes payable, net	$	41,097	$	67,766	$	108,863

The balances attributable to the 2019 Convertible Notes on December 31, 2019 were as follows:

	Phase 1		Phase 2		December 31, 2019
Convertible notes payable	$	40,587	$	35,973	$	76,560
Discount, original issuance	(20,946)		(23,982)		(44,928)
Discount, embedded derivative	181		(1,145)		(964)
Discount, fair value of preferred units	—		(2,031)		(2,031)
Discount, beneficial conversion features	(1,799)		—		(1,799)
Discount, accumulated amortization	22,564		27,158		49,722
Convertible notes payable, net	$	40,587	$	35,973	$	76,560