Income Taxes - Reconciliation between Federal Statutory Tax Rate and Consolidated Effective Tax Rate (Details)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal statutory rate	21.00%	21.00%	35.00%
State income taxes, net	(0.70%)	14.10%	(2.80%)
Foreign tax rate differential	(2.60%)	12.10%	(10.00%)
Permanent differences	(0.60%)	8.30%	(8.90%)
Valuation allowance	(17.70%)	(17.50%)	(48.60%)
Benefit from intraperiod tax allocation under ASC 740	0.00%	0.00%	73.50%
Net change in unrecognized tax benefits	0.60%	(0.90%)	0.50%
Other, net (primarily prior year return to provision)	4.00%	(1.60%)	1.60%
Effective tax rate	4.00%	35.50%	40.30%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Effective income tax rate reconciliation benefit from intra period tax allocation under ASC740.

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Effective income tax rate reconciliation, net increase (decrease) in unrecognized tax benefits.

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Effective income tax reconciliation permanent differences debt recapitalization.

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