Intangible Assets, Net and Goodwill - Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 167,754	$ 204,210
Accumulated Amortization	(139,580)	(169,092)
Net Carrying Amount	28,174	35,118
Customer/publisher/advertiser relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	61,324	70,300
Accumulated Amortization	(36,213)	(40,663)
Net Carrying Amount	25,111	29,637
Content [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	55,430	60,964
Accumulated Amortization	(55,430)	(60,940)
Net Carrying Amount	0	24
Website/trade/domain names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	23,059	33,546
Accumulated Amortization	(20,717)	(30,218)
Net Carrying Amount	2,342	3,328
Acquired technology and others [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	27,941	39,400
Accumulated Amortization	(27,220)	(37,271)
Net Carrying Amount	$ 721	$ 2,129