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Income Taxes Income Taxes (Tables)
6 Months Ended
Jun. 30, 2013
Income Tax Disclosure [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
The Company's effective tax rates attributable to income from continuing operations are as follows:
 
2013
2012
Three months ended June 30,
32.9%
31.7%
Six months ended June 30,
30.6%
30.2%