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Income Taxes - Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S. statutory tax benefit rate	(21.00%)	(21.00%)	(21.00%)
Release of foreign currency translation adjustments on liquidation of an international operation	2.70%	0.00%	0.00%
Impairments of goodwill	0.00%	12.30%	14.40%
Effect of CARES Act	0.00%	(3.10%)	0.00%
State income taxes, net of federal benefits	(1.60%)	(1.10%)	(0.40%)
Effect of foreign income taxed at different rates	(0.40%)	0.10%	0.70%
Valuation allowances against tax assets	3.30%	0.30%	0.80%
Non-deductible compensation	1.10%	0.10%	0.30%
Other non-deductible expenses, net	3.20%	0.10%	1.50%
Effective tax benefit rate	(12.70%)	(12.30%)	(3.70%)

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Effective Income Tax Rate Reconciliation, Coronavirus Aid, Relief, and Economic Security, Act, Percent

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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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