Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 0	$ 4,400,000	$ 8,100,000	$ 5,100,000
Unrecognized tax benefit that would not impact effective tax rate, tax position with uncertain timing of deductibility		3,700,000	7,600,000
Accrued interest included in unrecognized tax benefits		700,000	500,000
Income taxes paid	$ 68,100,000	$ 200,000	$ 13,000,000.0