Domestic And Foreign Income Taxes (Reconciliation Of Effective Income Tax Rate) (Details)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Domestic And Foreign Income Taxes [Abstract]
Tax provision at statutory rate	34.00%	(34.00%)	34.00%
Change in valuation allowance	(1.25%)	(5.12%)	(34.20%)
Impact of permanent items, including stock based compensation expense	16.40%	24.15%	6.08%
Effect of foreign tax rates	(18.04%)	6.35%	(6.35%)
State taxes net of federal benefit	(3.86%)	(1.43%)	0.78%
Effect of dividend of foreign subsidiary in prior year	3.94%	17.16%
Prior year provision to return true-up	(10.27%)	(5.10%)	9.59%
Other	(6.40%)	8.45%	(1.37%)
Domestic and foreign income tax rate	14.52%	10.46%	8.53%

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 attributable to revisions of previously reported income tax expense.

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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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