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Income Taxes Income Taxes (Tables)
9 Months Ended
Sep. 30, 2013
Income Tax Uncertainties [Abstract]  
Unrecognized Tax Benefits Related To Uncertain Tax Positions [Table Text Block]
We classify interest expense and penalties related to unrecognized tax liabilities and interest income on tax overpayments as components of income tax expense. The net interest and penalties expense recognized is as follows:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2013
 
2012
 
2013
 
2012
 
(in thousands)
Net interest and penalties expense
$
453

 
$
378

 
$
792

 
$
643


Accrued interest and penalties recorded are as follows:

 
September 30, 2013
 
December 31, 2012
 
(in thousands)
Accrued interest
$
3,459

 
$
3,095

Accrued penalties
3,390

 
3,030


Unrecognized tax benefits related to uncertain tax positions and the amount of unrecognized tax benefits that, if recognized, would affect our effective tax rate are as follows:
 
 
September 30, 2013
 
December 31, 2012
 
(in thousands)
Unrecognized tax benefits related to uncertain tax positions
$
27,558

 
$
26,433

The amount of unrecognized tax benefits that, if recognized, would affect our effective tax rate
26,747

 
25,852