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Goodwill and Intangible Assets, Net - Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Jun. 30, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 193,856	$ 167,754
Accumulated Amortization	(131,655)	(139,580)
Net Carrying Amount	62,201	28,174
Customer/publisher/advertiser relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	90,960	61,324
Accumulated Amortization	(41,297)	(36,213)
Net Carrying Amount	49,663	25,111
Content [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	43,705	55,430
Accumulated Amortization	(43,305)	(55,430)
Net Carrying Amount	400	0
Website/trade/domain names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	25,348	23,059
Accumulated Amortization	(18,412)	(20,717)
Net Carrying Amount	6,936	2,342
Acquired technology and others [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	33,843	27,941
Accumulated Amortization	(28,641)	(27,220)
Net Carrying Amount	$ 5,202	$ 721

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
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