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Equipment and Leasehold Improvements
 12 Months Ended
Dec. 31, 2011
Equipment and Leasehold Improvements
(6) Equipment and Leasehold Improvements

 

    December 31,  
    2011     2010  
             
Equipment   $ 35,160     $ 26,778  
Leasehold improvements     2,265       2,107  
      37,425       28,885  
Less accumulated depreciation and amortization     22,900       17,678  
    $ 14,525     $ 11,207  

 

Depreciation and amortization expense was $6.0 million, $3.5 million and $4.3 million for 2011, 2010 and 2009, respectively.