Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
Net deferred tax (asset) liability	$ (600,000)
Net deferred tax (asset) liability		$ 1,800,000
Income tax receivable	1,600,000	5,800,000
Net operating loss carryforwards	756,500,000
Foreign tax credit carryforwards, subject to expiration	100,000
Valuation allowance	334,000,000	291,100,000
Deferred income tax benefit	0	0	$ 13,300,000
Unrecognized tax benefits that would impact effective tax rate	9,800,000	10,500,000
Unrecognized Tax Benefits, Interest on Income Taxes Expense	900,000	800,000
Interest accrual reversal	1,000,000	300,000
Interest accrued net reduction	(100,000)	500,000
Total amount of interest accrued for uncertain tax positions	2,700,000	$ 2,800,000
Tax audit settlement expense	0
Accrued penalties related to uncertain tax positions	0
Amount by which unrecognized tax benefits may decrease over the next 12 months	7,300,000
Tax Year Prior to 2018
Income Tax Disclosure [Line Items]
Net operating loss carryforwards	$ 690,000,000
Tax Year 2030
Income Tax Disclosure [Line Items]
Net operating loss carryforwards, expiration year	2030
Tax Year 2037
Income Tax Disclosure [Line Items]
Net operating loss carryforwards, expiration year	2037
Tax Year 2027 | General Business and Other Credit Carryforwards
Income Tax Disclosure [Line Items]
Foreign tax credit carryforwards, subject to expiration, year	2027
Tax Year 2031 | General Business and Other Credit Carryforwards
Income Tax Disclosure [Line Items]
Foreign tax credit carryforwards, subject to expiration, year	2031
Tax Year 2010 | State
Income Tax Disclosure [Line Items]
State audits of tax under examination, year	2010
Tax Year 2011 | State
Income Tax Disclosure [Line Items]
State audits of tax under examination, year	2011
Tax Year 2012 | State
Income Tax Disclosure [Line Items]
State audits of tax under examination, year	2012
Tax Year 2013 | State
Income Tax Disclosure [Line Items]
State audits of tax under examination, year	2013
Tax Year 2014 | State
Income Tax Disclosure [Line Items]
State audits of tax under examination, year	2014