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Acquisitions and Dispositions (Tables)
 9 Months Ended
Sep. 30, 2012
Business Combinations [Abstract]  
Schedule of reductions to previously recognized contingent consideration liabilities
The Company’s assessment of these performance goals resulted in the following reductions to previously recognized contingent consideration liabilities:
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30
 
September 30
(In thousands)
 
2012
 
2011
 
2012
 
2011
Reduction of contingent consideration liabilities
 
$
—

 
$
—

 
$
—

 
$
3,966