Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) $ in Thousands	9 Months Ended
Mar. 31, 2020 USD ($)
Goodwill [Line Items]
Balance-beginning of period	$ 319,778
Goodwill acquired	963,939
Foreign currency translation	(1,955)
Balance-end of period	1,281,762
Compound Semiconductors
Goodwill [Line Items]
Balance-beginning of period	185,721
Goodwill acquired	0
Foreign currency translation	552
Balance-end of period	186,273
Photonic Solutions
Goodwill [Line Items]
Balance-beginning of period	134,057
Goodwill acquired	963,939
Foreign currency translation	(2,507)
Balance-end of period	$ 1,095,489

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

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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.

+ References

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