Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 166,450	$ 166,589
Accumulated Amortization	(161,150)	(156,508)
Net Carrying Amount	5,300	10,081
Customer/publisher/advertiser relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	36,909	36,669
Accumulated Amortization	(36,577)	(35,648)
Net Carrying Amount	332	1,021
Content [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	61,521	61,717
Accumulated Amortization	(59,908)	(57,778)
Net Carrying Amount	1,613	3,939
Website/trade/domain names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	31,287	31,470
Accumulated Amortization	(28,479)	(27,288)
Net Carrying Amount	2,808	4,182
Acquired technology and others [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	36,733	36,733
Accumulated Amortization	(36,186)	(35,794)
Net Carrying Amount	$ 547	$ 939