Changes in Accumulated Other Comprehensive Income (Loss), Net of Tax (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (5,388)
Other comprehensive income before reclassifications	(17,591)
Reclassifications from accumulated other comprehensive income	0
Other comprehensive loss	(17,591)	(28,874)
Ending balance	(22,979)
Unrealized Gains (Losses) on Available- for-Sale Investments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	3,074
Other comprehensive income before reclassifications	(8,488)
Reclassifications from accumulated other comprehensive income	0
Other comprehensive loss	(8,488)
Ending balance	(5,414)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(8,462)
Other comprehensive income before reclassifications	(9,103)
Reclassifications from accumulated other comprehensive income	0
Other comprehensive loss	(9,103)
Ending balance	$ (17,565)