Goodwill and Intangible Assets - Schedule of Intangible Assets Subject to Amortization (Detail) - USD ($)
$ in Thousands |
May 31, 2016 |
Feb. 29, 2016 |
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Gross Carrying Amount |
$ 73,806
|
$ 73,702
|
| Accumulated Amortization |
(36,484)
|
(34,510)
|
| Net Carrying Value |
37,322
|
39,192
|
| Acquired developed technology |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Gross Carrying Amount |
50,133
|
50,082
|
| Accumulated Amortization |
(26,849)
|
(25,643)
|
| Net Carrying Value |
23,284
|
24,439
|
| Customer relationships |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Gross Carrying Amount |
19,862
|
19,809
|
| Accumulated Amortization |
(7,929)
|
(7,313)
|
| Net Carrying Value |
11,933
|
12,496
|
| Patents |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Gross Carrying Amount |
2,999
|
2,999
|
| Accumulated Amortization |
(1,417)
|
(1,295)
|
| Net Carrying Value |
1,582
|
1,704
|
| Trade name |
|
|
| Acquired Finite-Lived Intangible Assets [Line Items] |
|
|
| Gross Carrying Amount |
812
|
812
|
| Accumulated Amortization |
(289)
|
(259)
|
| Net Carrying Value |
$ 523
|
$ 553
|