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Property and Equipment
6 Months Ended
Jun. 30, 2011
Property and Equipment [Abstract]  
Property and Equipment
5. Property and Equipment
The following table details property and equipment at the end of each period:
                 
    As of:  
    June 30,     December 31,  
    2011     2010  
    (in thousands)  
Property and equipment
               
Furniture and equipment
  $ 23,673     $ 17,855  
Leasehold improvements
    5,403       5,287  
Real property
    549       549  
 
           
 
    29,625       23,691  
Less: Accumulated depreciation and amortization
    12,782       11,940  
 
           
Property and equipment, net
  $ 16,843     $ 11,751  
 
           
Depreciation expense for the three months ended June 30, 2011 and 2010 was $1.0 million and $0.6 million, respectively. Depreciation expense for the six months ended June 30, 2011 and 2010 was $1.8 million and $1.2 million, respectively.