Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 0	$ (17,000)	$ 0	$ (238,000)
Pre-tax loss	$ (19,230,000)	$ (20,798,000)	$ (40,539,000)	$ (42,298,000)