Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Jun. 30, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 166,394	$ 166,589
Accumulated Amortization	(159,720)	(156,508)
Net Carrying Amount	6,674	10,081
Customer/publisher/advertiser relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	36,901	36,669
Accumulated Amortization	(36,384)	(35,648)
Net Carrying Amount	517	1,021
Content [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	61,486	61,717
Accumulated Amortization	(59,122)	(57,778)
Net Carrying Amount	2,364	3,939
Website/trade/domain names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	31,274	31,470
Accumulated Amortization	(28,149)	(27,288)
Net Carrying Amount	3,125	4,182
Acquired technology and others [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	36,733	36,733
Accumulated Amortization	(36,065)	(35,794)
Net Carrying Amount	$ 668	$ 939