Convertible Promissory Notes (Tables)

6 Months Ended

Jun. 30, 2022

Debt Disclosure [Abstract]

Summary of convertible promissory notes

Convertible promissory notes—related parties, net of discounts and deferred issuance costs, consisted of the following (in thousands):

	June 30, 2022		December 31, 2021
Convertible notes issued in November 2018	$	48	$	125
Convertible notes issued in October 2020		571		623
Unamortized discount and deferred issuance costs		—		(5	)
Total	$	619	$	743