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Income Taxes (Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Tax provision at statutory rate based on income before income taxes (percent)	21.00%	21.00%	21.00%
Stock-based compensation (percent)	(9.40%)	(267.70%)	(15.40%)
Federal research credit (percent)	(2.30%)	(124.20%)	(4.00%)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	(2.20%)	49.70%	1.90%
Effective Income Tax Rate Reconciliation, US tax on worldwide earnings at different rates, Percent	(0.40%)	(123.70%)	7.90%
Settlement of taxing authority examinations (percent)	0.00%	(122.90%)	(7.70%)
Effective Income Tax Rate Reconciliation, Tax treaty protocols, Percent	0.00%	0.00%	(2.90%)
Non deductible/non-taxable items (percent)	0.80%	28.60%	2.80%
Foreign income taxes (percent)	3.10%	79.90%	4.50%
State income taxes, net of federal tax benefit (percent)	3.70%	(24.50%)	0.30%
Other, net (percent)	0.10%	(10.10%)	(0.10%)
Effective income tax rate, continuing operations (percent)	14.40%	(493.90%)	8.30%

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Effective Income Tax Rate Reconciliation, Tax treaty protocols, 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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-Publisher FASB
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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 attributable to research tax credit.

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