Related Party Transactions - Additional Information (Detail) (Management [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015 Law_Firm	Mar. 31, 2014	Jun. 30, 2014
Management [Member]
Schedule of Other Related Party Transactions [Line Items]
Legal services to these law firms	$ 42	$ 258	$ 232	$ 577
Amount payable to law firms	$ 43		$ 43		$ 116
Number of law firms related to entities			2