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Goodwill and Intangible Assets - Intangible Assets (Parenthetical) (Detail) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
May. 30, 2014 | Mar. 31, 2015 | Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets |  | $ 5,110 |
Granville-Phillips [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets | $ 38,850 |  | $ 38,850
Completed Technology [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets |  | 820 |
Completed Technology [Member] | Granville-Phillips [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets |  |  | 15,700
Customer Relationships [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets |  | 1,430 |
Customer Relationships [Member] | Granville-Phillips [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets | $ 21,250 |  | 21,250
Patents, Trademarks, Trade Names and Other [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets |  | $ 2,860 |
Patents, Trademarks, Trade Names and Other [Member] | Granville-Phillips [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Acquired intangible assets |  |  | $ 1,900

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