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Business Segment, Geographic Area, Product and Significant Customer Information - 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 assets $ 1,213,018 $ 1,152,562
Cash and cash equivalents and investments   627,399
Other current assets 16,715 28,048
Property, plant and equipment, net 77,536 80,516
Goodwill and intangible assets, net   162,294
Other assets 31,847 29,412
Reconciliations of Segment Assets to Consolidated Assets [Member]
    
Segment Reporting Information [Line Items]    
Total assets 259,471 216,699
Cash and cash equivalents and investments 650,022 627,399
Other current assets 30,143 36,242
Property, plant and equipment, net 77,536 80,516
Goodwill and intangible assets, net 163,999 162,294
Other assets $ 31,847 $ 29,412