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Taxes (Reconciliation of Tax Rates) (Details 5)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Reconciliation of the statutory U.S. federal tax rate to the company's effective tax rate      
Statutory rate 35.00% 35.00% 35.00%
Foreign tax differential (14.00%) (11.00%) (10.00%)
State and local 0.00% 1.00% 2.00%
Domestic incentives (3.00%) (1.00%) (1.00%)
Other (2.00%) 0.00% (1.00%)
Effective rate 16.00% 24.00% 25.00%