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Lease Commitments (Tables)
12 Months Ended
Dec. 31, 2011
Leases [Abstract]  
Operating Leases of Lessee Disclosure
The following table summarizes the future minimum lease payments for non-cancelable operating leases for the next five years and thereafter as of December 31, 2011:
 
 
2012
$
6,841

2013
6,256

2014
4,835

2015
3,619

2016
2,537

Thereafter
10,933

 
$
35,021