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Operating Leases
12 Months Ended
Dec. 31, 2012
Leases, Operating [Abstract]  
Operating Leases
Operating Leases
Lessee.    The Company leases certain equipment, offices, and warehouse space under non-cancelable operating leases. Rental expense was $14.4 million, $16.7 million, and $15.5 million for 2012, 2011 and 2010, respectively.
A summary of future rental commitments over the next five years under non-cancelable operating leases is as follows (in thousands):
Years Ending December 31,
 
2013
$
8,641

2014
8,242

2015
7,955

2016
8,978

2017
8,900

Total
$
42,716