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Goodwill and Intangible Assets, net
9 Months Ended
Oct. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets, net
Goodwill and Intangible Assets, net
Goodwill
During the three months ended April 30, 2017, the Company recorded $3.7 million of goodwill related to its transaction with Stormpath (see Note 3). As of October 31, 2017 and January 31, 2017, goodwill was $6.3 million and $2.6 million, respectively. No goodwill impairments were recorded during the three and nine months ended October 31, 2017 and 2016, respectively.
Intangible Assets, net
Intangible assets consisted of the following (in thousands):  
 
As of October 31, 2017
 
(unaudited)
 
Gross
 
Accumulated Amortization
 
Net
Capitalized internal-use software costs
$
15,344

 
$
(4,446
)
 
$
10,898

Software licenses
1,023

 
(466
)
 
557

Purchased developed technology
570

 
(570
)
 

 
$
16,937

 
$
(5,482
)
 
$
11,455

 
As of January 31, 2017
 
Gross
 
Accumulated Amortization
 
Net
Capitalized internal-use software costs
$
10,859

 
$
(2,487
)
 
$
8,372

Software licenses
1,093

 
(314
)
 
779

Purchased developed technology
570

 
(566
)
 
4

 
$
12,522

 
$
(3,367
)
 
$
9,155


The Company capitalized $1.7 million and $1.9 million of internal-use software costs in the three months ended October 31, 2017 and 2016, respectively, and $5.0 million and $4.4 million in the nine months ended October 31, 2017 and 2016, respectively. Included in the total amounts capitalized are stock-based compensation expense of $0.3 million and $0.2 million in the three months ended October 31, 2017 and 2016, respectively, and $0.9 million and $0.4 million in the nine months ended October 31, 2017 and 2016, respectively. The Company reversed $0.5 million of previously capitalized costs in the three months ended October 31, 2017 as they were not realizable. The charge was recognized in research and development in the condensed consolidated statements of operations.
Amortization expense was $0.8 million and $0.5 million for the three months ended October 31, 2017 and 2016, respectively, and $2.1 million and $1.3 million for the nine months ended October 31, 2017 and 2016, respectively.