Income Taxes - Schedule of Income Loss Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ (89,865)	$ (62,539)	$ (52,314)
Foreign (Austria)	1,186	556	(493)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ (88,679)	$ (61,983)	$ (52,807)