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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2011
Income Taxes [Abstract]  
Schedule Of Income Tax Expense (Benefit)
Reconciliation Of Income Tax Expense (Benefit)
Deferred Tax Assets And Liabilities
Reconciliation Of Unrecognized Tax Benefits
      Years ended December 31,  
(In thousands)    2011     2010     2009  

Balance at beginning of year

   $ 4,816      $ 6,556      $ 7,991   

Additions as a result of tax positions taken during the current year

     462        816        1,400   

Additions as a result of tax positions taken during prior years

     518        1,322        528   

Reductions as a result of tax positions taken during prior years

     (791     (2,046     (509

Reductions relating to settlements with taxing authorities

     —          (1,286     (2,854

Reductions as a result of lapse of statute of limitations

     (569     (546     —     
                          

Balance at end of year

   $ 4,436      $ 4,816      $ 6,556