Income Taxes - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 28, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Remeasurement of net deferred tax liabilities				$ 140,000
Income tax receivable, related to carrybacks		$ 15,600
Income tax receivable		18,690	$ 29,148	100,000
Proceeds from refund of overpaid federal tax	$ 77,000
Uncertain tax benefits that, if recognized, would affect effective tax rate		4,200	2,500
Recognized interest and penalties expense (benefit) related to unrecognized tax benefits		200	100	$ (600)
Accrued interest and penalties		500	$ 300
State Tax
Operating Loss Carryforwards [Line Items]
Tax credit carryforward		8,100
Net operating loss carryforwards		4,700
Federal Tax
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		187,000
Foreign Tax
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		4,100
Federal Trade Commission Inquiry
Operating Loss Carryforwards [Line Items]
Litigation settlement, amount awarded to other party		$ 175,000