Income Taxes (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income taxes	$ 0			$ 0			$ 0	$ 0
Net loss	$ 14,555,000	$ 12,367,000	$ 14,672,000	$ 16,551,000	$ 2,334,000	$ 16,530,000	$ 41,594,000	$ 35,415,000