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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Feb. 28, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Changes in Carrying Amount of Goodwill
The changes in the carrying amount of goodwill are summarized as follows (in thousands): 
Balance as of February 29, 2016
$
69,595

Goodwill acquired
409

Effect of foreign exchange rates
(209
)
Balance as of February 28, 2017
$
69,795
Schedule of Intangible Assets Subject to Amortization
Intangible assets subject to amortization are summarized as follows (in thousands): 
 
As of February 28, 2017
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Value
Acquired developed technology
$
50,013

 
$
(30,105
)
 
$
19,908

Customer relationships
19,736

 
(9,348
)
 
10,388

Patents
2,999

 
(1,781
)
 
1,218

Trade name
812

 
(375
)
 
437

 
$
73,560

 
$
(41,609
)
 
$
31,951

 
 
As of February 29, 2016
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net
Carrying
Value
Acquired developed technology
$
50,082

 
$
(25,643
)
 
$
24,439

Customer relationships
19,809

 
(7,313
)
 
12,496

Patents
2,999

 
(1,295
)
 
1,704

Trade name
812

 
(259
)
 
553

 
$
73,702

 
$
(34,510
)
 
$
39,192