Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Purchased Intangible Assets (Purchased Intangible Assets) (Details)

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Goodwill and Purchased Intangible Assets (Purchased Intangible Assets) (Details) (USD $)
 3 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Jun. 30, 2012
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]      
2013 (remaining 9 months) $ 13,566,000    
2014 15,368,000    
2015 12,752,000    
2016 5,564,000    
2017 806,000    
2018 and thereafter 25,000    
Components of purchased intangible assets      
Gross Carrying Amount 282,080,000   283,125,000
Accumulated Amortization and Impairment 233,999,000   227,489,000
Total 48,081,000   55,636,000
Other intangible assets, amortization expense 7,200,000 8,000,000  
Existing technology
      
Components of purchased intangible assets      
Gross Carrying Amount 133,659,000   134,561,000
Accumulated Amortization and Impairment 113,494,000   110,370,000
Total 20,165,000   24,191,000
Existing technology | Minimum
      
Components of purchased intangible assets      
Range of Useful Lives 4 years    
Existing technology | Maximum
      
Components of purchased intangible assets      
Range of Useful Lives 7 years    
Patents
      
Components of purchased intangible assets      
Gross Carrying Amount 57,648,000   57,648,000
Accumulated Amortization and Impairment 48,559,000   46,966,000
Total 9,089,000   10,682,000
Patents | Minimum
      
Components of purchased intangible assets      
Range of Useful Lives 6 years    
Patents | Maximum
      
Components of purchased intangible assets      
Range of Useful Lives 13 years    
Trade name/Trademark
      
Components of purchased intangible assets      
Gross Carrying Amount 19,893,000   19,893,000
Accumulated Amortization and Impairment 14,803,000   14,428,000
Total 5,090,000   5,465,000
Trade name/Trademark | Minimum
      
Components of purchased intangible assets      
Range of Useful Lives 4 years    
Trade name/Trademark | Maximum
      
Components of purchased intangible assets      
Range of Useful Lives 10 years    
Customer relationships
      
Components of purchased intangible assets      
Gross Carrying Amount 54,680,000   54,823,000
Accumulated Amortization and Impairment 40,943,000   39,525,000
Total 13,737,000   15,298,000
Customer relationships | Minimum
      
Components of purchased intangible assets      
Range of Useful Lives 6 years    
Customer relationships | Maximum
      
Components of purchased intangible assets      
Range of Useful Lives 7 years    
Other
      
Components of purchased intangible assets      
Gross Carrying Amount 16,200,000   16,200,000
Accumulated Amortization and Impairment 16,200,000   16,200,000
Total $ 0   $ 0
Other | Minimum
      
Components of purchased intangible assets      
Range of Useful Lives 0 years    
Other | Maximum
      
Components of purchased intangible assets      
Range of Useful Lives 1 year