Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 0	$ (239,000)	$ 0	$ 0
Pre-tax loss	$ (18,757,000)	$ (20,673,000)	$ (59,296,000)	$ (62,970,000)