Quarterly report pursuant to Section 13 or 15(d)

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

v3.3.0.814
Goodwill and Purchased Intangible Assets - Purchased Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Jun. 30, 2014
Jun. 30, 2015
Components of purchased intangible assets        
Gross Carrying Amount $ 274,180     $ 274,180
Accumulated Amortization and Impairment 265,938     262,285
Total 8,242     11,895
Intangible assets, amortization expense 3,700 $ 4,100    
Existing technology        
Components of purchased intangible assets        
Gross Carrying Amount 141,659     141,659
Accumulated Amortization and Impairment 136,660     134,664
Total $ 4,999     6,995
Existing technology | Minimum        
Components of purchased intangible assets        
Range of Useful Lives 4 years   4 years  
Existing technology | Maximum        
Components of purchased intangible assets        
Range of Useful Lives 7 years   7 years  
Patents        
Components of purchased intangible assets        
Gross Carrying Amount $ 57,648     57,648
Accumulated Amortization and Impairment 57,648     56,998
Total $ 0     650
Patents | Minimum        
Components of purchased intangible assets        
Range of Useful Lives 6 years   6 years  
Patents | Maximum        
Components of purchased intangible assets        
Range of Useful Lives 13 years   13 years  
Trade name/Trademark        
Components of purchased intangible assets        
Gross Carrying Amount $ 19,893     19,893
Accumulated Amortization and Impairment 19,260     18,899
Total $ 633     994
Trade name/Trademark | Minimum        
Components of purchased intangible assets        
Range of Useful Lives 4 years   4 years  
Trade name/Trademark | Maximum        
Components of purchased intangible assets        
Range of Useful Lives 10 years   10 years  
Customer relationships        
Components of purchased intangible assets        
Gross Carrying Amount $ 54,980     54,980
Accumulated Amortization and Impairment 52,370     51,724
Total $ 2,610     $ 3,256
Customer relationships | Minimum        
Components of purchased intangible assets        
Range of Useful Lives 6 years   6 years  
Customer relationships | Maximum        
Components of purchased intangible assets        
Range of Useful Lives 7 years   7 years