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Goodwill and Intangible Assets, net
12 Months Ended
Jan. 31, 2018
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). No goodwill impairments were recorded during the years ended January 31, 2018, 2017 and 2016.
Goodwill balances as of January 31, 2018 and 2017 were as follows (in thousands):
 
 
Balance as of January 31, 2017
$
2,630

Goodwill recorded in connection with Stormpath acquisition
3,652

Balance as of January 31, 2018
$
6,282

 
 

Intangible Assets, net
Intangible assets consisted of the following (in thousands):  
 
As of January 31, 2018
 
Gross
 
Accumulated Amortization
 
Write-offs
 
Net
Capitalized internal-use software costs
$
17,511

 
$
(5,172
)
 
$
(1,077
)
 
$
11,262

Software licenses
1,094

 
(558
)
 
(37
)
 
499

Purchased developed technology
570

 
(570
)
 

 

 
$
19,175

 
$
(6,300
)
 
$
(1,114
)
 
$
11,761

 
 
 
 
 
 
 
 
 
As of January 31, 2017
 
Gross
 
Accumulated Amortization
 
Write-offs
 
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 $6.7 million and $6.1 million of internal-use software during the years ended January 31, 2018 and 2017, respectively, which included $1.2 million and $0.6 million of stock-based compensation costs, respectively. Amortization expense of capitalized internal-use software costs totaled $2.7 million, $1.6 million and $0.7 million during the years ended January 31, 2018, 2017 and 2016, respectively. The Company reversed $1.1 million of previously capitalized costs in the year ended January 31, 2018 as they were not realizable. The charge was recognized in research and development in the consolidated statements of operations.
The Company acquired $0.4 million of software licenses to support its operations in the year ended January 31, 2017 and did not acquire software licenses in the year ended January 31, 2018.
Amortization expense of intangible assets for the years ended January 31, 2018, 2017 and 2016 was $2.9 million$1.8 million, and $0.9 million, respectively.
As of January 31, 2018, estimated remaining amortization expense for the intangible assets by fiscal year is as follows (in thousands):
2019
$
2,954

2020
1,943

2021
6,864

Total
$
11,761