Intangible Assets and Goodwill
 6 Months Ended
May 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets and Goodwill
Intangible Assets and Goodwill

Intangible Assets

Intangible assets are comprised of the following significant classes (in thousands):
 
 
May 31, 2014
 
November 30, 2013
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net Book
Value
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net Book
Value
Purchased technology
$
52,079

 
$
(37,733
)
 
$
14,346

 
$
44,793

 
$
(36,712
)
 
$
8,081

Customer-related and other
19,733

 
(17,989
)
 
1,744

 
19,543

 
(17,674
)
 
1,869

Total
$
71,812

 
$
(55,722
)
 
$
16,090

 
$
64,336

 
$
(54,386
)
 
$
9,950



As a result of the Modulus acquisition in May 2014 (Note 7), we recorded $7.3 million of purchased technology and $0.2 million of the trade name as intangible assets during the six months ended May 31, 2014. These intangibles have a weighted average useful life of 7 years.

In the three and six months ended May 31, 2014, amortization expense related to intangible assets was $0.7 million and $1.4 million, respectively. In the three and six months ended May 31, 2013, amortization expense related to intangible assets was $0.3 million and $0.6 million, respectively.

Future amortization expense for intangible assets as of May 31, 2014, is as follows (in thousands):
 
Remainder of 2014
$
1,851

2015
3,482

2016
2,979

2017
2,979

2018
2,162

Thereafter
2,637

Total
$
16,090



Goodwill

Changes in the carrying amount of goodwill in the six months ended May 31, 2014, are as follows (in thousands):

Balance, November 30, 2013
$
224,286

Additions
6,433

Translation adjustments
(38
)
Balance, May 31, 2014
$
230,681



The addition to goodwill during fiscal year 2014 is related to the acquisition of Modulus in May 2014 (Note 7).

During the first quarter of fiscal year 2014, we completed our annual testing for impairment of goodwill and, based on those tests, concluded that no impairment of goodwill existed as of December 15, 2013. Through the date and time our condensed consolidated financial statements were issued, no triggering events have occurred that would indicate a potential impairment of goodwill exists.