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Software Development Costs
 12 Months Ended
Dec. 30, 2017
Research and Development [Abstract]  
Software Development Costs
Software Development

Information regarding our software development costs is included in the following table:
 
For the Years Ended
(In thousands)
2017
 
2016
 
2015
 
 
 
 
 
 
Software development costs
$
705,944

 
$
704,882

 
$
685,260

Capitalized software development costs
(274,148
)
 
(293,696
)
 
(264,656
)
Amortization of capitalized software development costs
173,250

 
140,232

 
119,195

 
 
 
 
 
 
Total software development expense
$
605,046

 
$
551,418

 
$
539,799



Accumulated amortization as of the end of 2017 and 2016 was $1.3 billion and $1.1 billion, respectively.