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Income Taxes (Tables)
9 Months Ended
Sep. 30, 2012
Income Tax Contingency [Line Items]  
Summary of Income Tax Contingencies [Table Text Block]
A reconciliation of the September 30, 2012 and 2011 amount of unrecognized tax benefits is as follows (in thousands):
 
2012
 
2011
Balance at January 1
$
9,500

 
$
7,300

Additions/(reductions) based on tax positions related to the current year
400

 
1,800

Additions for tax positions of prior years

 

Reductions for tax positions of prior years
(1,800
)
 

Balance at September 30
$
8,100

 
$
9,100