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Basis of Presentation - Reconciliation of Segment Assets to Consolidated Total Assets (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Total segment assets | $ 259,471 | $ 216,699
Cash and cash equivalents and investments |  | 627,399
Other current assets |  | 36,242
Property, plant and equipment, net | 77,536 | 80,516
Goodwill and intangible assets, net |  | 162,294
Other assets | 31,847 | 29,412
Total assets | 1,213,018 | 1,152,562
As Previously Reported [Member] |  |
Segment Reporting Information [Line Items] |  |
Total segment assets |  | 216,699
Cash and cash equivalents and investments |  | 627,399
Other current assets |  | 36,242
Property, plant and equipment, net |  | 80,516
Goodwill and intangible assets, net |  | 162,294
Other assets |  | 11,692
Total assets |  | 1,134,842
Adjustment [Member] |  |
Segment Reporting Information [Line Items] |  |
Total segment assets |  |
Cash and cash equivalents and investments |  |
Other current assets |  |
Property, plant and equipment, net |  |
Goodwill and intangible assets, net |  |
Other assets |  | 17,720
Total assets |  | $ 17,720

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