Income Taxes (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ (64,769,000)	$ 34,000
Adjustments recognized for uncertain tax positions	$ 0	$ 0
Operating loss carryforwards			$ 1,500,000,000