Goodwill and Other Intangible - Changes in Carrying Amount of Goodwill (Detail) $ in Thousands	3 Months Ended
Sep. 30, 2020 USD ($)
Goodwill [Roll Forward]
Balance-beginning of period	$ 1,239,009
Goodwill acquired	18,922
Finisar measurement period adjustments	(4,901)
Foreign currency translation	1,308
Balance-end of period	1,254,338
Compound Semiconductors
Goodwill [Roll Forward]
Balance-beginning of period	1,052,494
Goodwill acquired	0
Finisar measurement period adjustments	(4,901)
Foreign currency translation	1,557
Balance-end of period	1,049,150
Photonic Solutions
Goodwill [Roll Forward]
Balance-beginning of period	186,515
Goodwill acquired	18,922
Finisar measurement period adjustments	0
Foreign currency translation	(249)
Balance-end of period	$ 205,188

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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