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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