XILINX INC | 2013 | FY | 3

Goodwill and Acquisition-Related Intangibles
As of March 30, 2013 and March 31, 2012, the gross and net amounts of goodwill and of acquisition-related intangibles for all acquisitions were as follows:
 







Weighted-Average
(In thousands)
2013

2012

Amortization Life
Goodwill
$
158,990


$
149,538



In-process research and development
$
—


$
4,000



Core technology, gross
89,360


76,440


5.8 years
Less accumulated amortization
(54,201
)

(46,051
)


Core technology, net
35,159


30,389



Other intangibles, gross
46,516


46,206


2.7 years
Less accumulated amortization
(45,621
)

(44,263
)


Other intangibles, net
895


1,943



Total acquisition-related intangibles, gross
135,876


126,646



Less accumulated amortization
(99,822
)

(90,314
)


Total acquisition-related intangibles, net
$
36,054


$
36,332




Amortization expense for acquisition-related intangibles for fiscal 2013, 2012 and 2011 were $9.5 million, $7.6 million and $1.0 million, respectively. Based on the carrying value of acquisition-related intangibles recorded as of March 30, 2013, and assuming no subsequent impairment of the underlying assets, the annual amortization expense for acquisition-related intangibles is expected to be as follows:
 
Fiscal
(In thousands)
2014
$
9,542

2015
8,846

2016
8,244

2017
6,473

2018
2,347

Thereafter
602

Total
$
36,054

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