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Property and Equipment
12 Months Ended
Sep. 30, 2012
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment
As of the dates specified below, our property and equipment consisted of the following:
 
September 30,
 
2012
 
2011
Land and building
$
6,108

 
$
5,972

Computer hardware
28,534

 
23,565

Computer software
76,215

 
59,039

Furniture and equipment
1,826

 
1,592

Leasehold improvements
6,447

 
5,935

Property and equipment, gross
119,130

 
96,103

Less: accumulated depreciation
(61,739
)
 
(50,128
)
Property and equipment, net
$
57,391

 
$
45,975


Depreciation expense of property and equipment was $23.2 million, $19.5 million, and $16.8 million for 2012, 2011, and 2010, respectively.