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6. PROPERTY AND EQUIPMENT
12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
PROPERTY AND EQUIPMENT

Property and equipment and accumulated depreciation and amortization are as follows (in thousands):

 

   December 31, 
   2013   2012 
Land  $250   $250 
Medical equipment   304,592    293,169 
Computer and office equipment, furniture and fixtures   88,946    80,270 
Software development costs   5,108    3,376 
Leasehold improvements   186,561    172,914 
Equipment under capital lease   34,407    32,091 
    619,864    582,070 
Accumulated depreciation and amortization   (401,317)   (365,510)
   $218,547   $216,560 

 

Depreciation and amortization expense on property and equipment, including amortization of equipment under capital leases, for the years ended December 31, 2013, 2012 and 2011 was $55.8 million, $54.2 million, and $54.0 million, respectively.