Income Taxes - Effective Income Tax Reconciliation (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of the U.S. federal statutory tax rate to the actual tax rate is as follows:
Statutory U.S. federal income tax rate	21.00%	21.00%	21.00%
Foreign earnings at rates different than U.S. federal rate	(2.90%)	0.30%	(0.60%)
Valuation allowance adjustments	86.30%	(17.10%)	(8.70%)
Effective Income Tax Rate Reconciliation, Adjustment Permanent Items, Percent	(0.50%)	(1.90%)	(3.00%)
Effective Income Tax Rate Reconciliation, Reduction of UTBs, Percent	0.00%	0.20%	1.70%
Effective Income Tax Rate Reconciliation, Goodwill Impairment, Percent	0.00%	(1.50%)	0.00%
Other	4.50%	(0.50%)	2.10%
Effective income tax rate	108.40%	0.50%	12.50%