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Income Taxes Income Taxes (Tables)
9 Months Ended
Sep. 30, 2013
Income Tax [Abstract]  
Summary of Income Tax Contingencies [Table Text Block]
A reconciliation of the September 30, 2013 and 2012 amount of unrecognized tax benefits is as follows (in thousands):
 
2013
 
2012
Balance at January 1
$
9,800

 
$
9,500

Additions based on tax positions related to the current year

 
400

Additions for tax positions of prior years
800

 

Reductions for tax positions of prior years
(4,100
)
 
(1,800
)
Balance at September 30
$
6,500

 
$
8,100