Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Net change in valuation allowance	$ (102,014)	$ (973)	$ (5,107)
State and local operating loss carryforwards not likely to be recognized	24,300
Increase (decrease) in unrecognized tax benefits during period	(24,600)	(200)	(1,100)
Unrecognized tax benefits	23,703	48,305	48,469	$ 49,521
Income tax penalties and interest expense	(2,300)	3,700	2,300
Unrecognized tax benefits, interest on income taxes accrued	8,400	10,700	$ 7,000
Unrecognized tax benefits that would impact effective tax rate	23,700
Decrease in unrecognized tax benefits is reasonably possible	21,800
Management Reassessment
Income Tax Contingency [Line Items]
Net change in valuation allowance	(105,600)
State and Local Jurisdiction
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 25,600	$ 26,900