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 tax	$ 0	$ 0	$ 0	$ 1,266,000
Pre-tax income (loss)	$ 36,422,000	$ (22,955,000)	$ (2,559,000)	$ 8,416,000