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Leases (Tables)
12 Months Ended
Dec. 31, 2011
Leases [Abstract]  
Minimum future operating lease payments
At December 31, 2011, minimum future operating lease payments are as follows (in thousands):

2012
 $4,379 
2013
  3,151 
2014
  1,098 
2015
  294 
2016 and thereafter
  137 
      
Total (1)
 $9,059 
      
(1) Minimum payments have not been reduced by minimum sublease rentals of $525 thousand due in the future under noncancelable subleases.