Annual report pursuant to Section 13 and 15(d)

Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details)

v3.8.0.1
Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Taxes [Abstract]      
Statutory income tax benefit (34.00%) (34.00%) (34.00%)
Foreign taxes 1.70% 8.80% 1.40%
State income taxes, net of federal income taxes (2.30%) (2.80%) 0.30%
Income Tax credits (5.00%) (5.50%) (3.30%)
Incentive Stock options 5.50% 0.60% 0.50%
Change in effective state rate (1.50%) (0.30%) 0.10%
Undistributed earnings of foreign subsidiaries   (1.00%) 8.40%
Impairment of goodwill     24.80%
Translation loss (6.90%)    
Impact of tax reform (105.70%)    
Other 3.30% 4.00% (1.10%)
Change in valuation allowance 56.60% 38.20% 120.90%
Income tax expense (benefit) (88.30%) 8.00% 118.00%