Intangible Assets, Net - Composition of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Less: Accumulated amortization	$ (2,132)	$ (1,907)
Intangible assets, net	$ 857	1,082
Healthspan Research LLC Acquisition
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	10 years
Intangible assets, gross	$ 1,346	1,346
License agreements and other
Finite-Lived Intangible Assets [Line Items]
Weighted Average Life (Years)	9 years
Intangible assets, gross	$ 1,643	$ 1,643