Related Parties - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Related Party Transactions [Abstract]
Expenses to related parties	$ 1,004	$ 1,092	$ 896
Amount payable to law firms	$ 216	$ 644
Number of law firms related to entities	2