Short Term Investments - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Minimum	Jun. 30, 2013 Maximum
Schedule of Investments [Line Items]
Short-term investments including certificates of deposit	$ 55,179	$ 85,007
Certificates of deposit, maturity period			1 month 15 days	7 months 18 days