Income Taxes (Schedule Of Effective Tax Rate Reconciliation) (Details)	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Abstract]
Tax provision based on the federal statutory rate	35.00%	35.00%	35.00%
Nondeductible expenses	(1.10%)	(0.10%)	12.50%
Foreign exchange loss	9.40%
Uncertain tax positions	(25.10%)	(0.50%)	11.20%
Deemed income related to foreign operations	(8.40%)	(0.60%)	8.10%
Return to provision adjustments — foreign tax credit	8.40%	(0.70%)	2.50%
Return to provision adjustments — research and development credits	4.00%
Return to provision adjustments — non-consolidated U.S. entities	6.40%
Impairment of definite lived intangibles	3.10%
Foreign income tax rate differential	3.10%	(2.00%)	0.50%
State taxes, net of federal benefit, before valuation allowance	3.90%	0.90%	0.30%
Increase in valuation allowances	(58.50%)	(16.40%)
Impairment of goodwill with no tax basis		(16.80%)
Foreign tax credits related to above	6.50%	0.20%	(6.30%)
Deferred tax adjustment — deferred revenue	7.60%
Deferred tax adjustment — state tax credits	1.40%
Deferred tax adjustments — other	4.00%
Domestic production activities deduction			(12.00%)
Research credits			(21.90%)
Other	1.70%	(0.40%)	1.40%
Effective tax rate	1.40%	(1.40%)	31.30%

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 deferred other adjustments.

No definition available.