Quarterly report pursuant to Section 13 or 15(d)

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

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Goodwill and Purchased Intangible Assets - Schedule of Goodwill (Details)
$ in Thousands
 3 Months Ended
Sep. 30, 2018
USD ($)
reporting_unit
Goodwill  
Number of reporting units | reporting_unit 4
Goodwill  
Balance as of June 30, 2018 $ 354,698
Acquired goodwill 5,807
Foreign currency and other adjustments (77)
Balance as of September 30, 2018 360,428
Wafer Inspection  
Goodwill  
Balance as of June 30, 2018 281,005
Acquired goodwill 0
Foreign currency and other adjustments (77)
Balance as of September 30, 2018 280,928
Patterning  
Goodwill  
Balance as of June 30, 2018 53,255
Acquired goodwill 0
Foreign currency and other adjustments 0
Balance as of September 30, 2018 53,255
GSS  
Goodwill  
Balance as of June 30, 2018 8,039
Acquired goodwill 4,631
Foreign currency and other adjustments 0
Balance as of September 30, 2018 12,670
Others  
Goodwill  
Balance as of June 30, 2018 12,399
Acquired goodwill 1,176
Foreign currency and other adjustments 0
Balance as of September 30, 2018 $ 13,575