Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Income Taxes (Schedule of Reconciliation of Income Tax Rate) (Details)

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Income Taxes (Schedule of Reconciliation of Income Tax Rate) (Details)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Taxes [Abstract]        
Statutory rate 25.00% 35.00% 35.00% 25.00%
Approved and Privileged enterprise benefits 6.00%        
State income taxes, net of federal benefit    2.50% 2.10%  
Tax exempt interest income           
Stock compensation expense (17.30%) 3.40% 0.60%  
Manufacturing deduction    (5.90%) (2.70%)  
Federal research and development tax credit       (1.60%)  
Tax contingencies (12.10%) (3.50%) 0.40%  
Non-deductible acquisition expenses (4.80%) 12.90% 0.30%  
Earning taxed under foreign law 13.20% 3.40%     
Other (1.60%) 4.50% 0.10%  
Effective income tax rate 8.40% 52.30% 34.20%