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 tax	$ 0	$ 0	$ 0	$ 1,266,000
Net income (loss)	$ 14,238,000	$ (22,628,000)	$ (38,981,000)	$ 31,371,000