Income Tax - Schedule of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Components of Deferred Tax Assets [Abstract]
Net Operating Loss	$ 62,347	$ 52,127
Amortization	117	134
Stock-based compensation	2,829	2,297
Research and Development Credit	7,902	6,663
Right of use of Liability	1,290	1,585
Depreciation	536	298
Other	1,745	740
Gross deferred tax assets	76,766	63,844
Less: Valuation Allowance	(75,546)	(62,355)
Total net deferred tax assets	1,220	1,489
Right of use of Asset	(1,220)	(1,489)
Total deferred tax liabilities	(1,220)	(1,489)
Net deferred tax assets	$ 0	$ 0