Convertible Promissory Note - Summary of Interest Expense of Convertible Promissory Note (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Convertible Promissory Note [Abstract]
Coupon interest at 6%	$ 86	$ 143
Accretion of discount and amortization of issuance costs	177	274
Total interest expense on Convertible Promissory Note	$ 263	$ 417