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Restructuring (Tables)
6 Months Ended
Jun. 30, 2011
Restructuring  
Schedule of Restructuring Related Liabilities
       
Balance at December 31, 2010
$
6,295
 
Provision charged to operating expense
 
354
 
Cash outlays
 
(2,255
)
Non-cash write-downs
 
(3,541
)
Balance at December 31, 2011
$
853