Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (3,988,000)	$ 1,423,000	$ (3,959,000)	$ 18,131,000
Reserves for uncertain tax positions	$ 0	$ 0	$ 0	$ 0