Related Party Transactions - Additional Information (Detail) (Management [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014 Law_Firm	Dec. 31, 2013	Jun. 30, 2014
Management [Member]
Schedule of Other Related Party Transactions [Line Items]
Legal services to these law firms	$ 91	$ 159	$ 190	$ 319
Amount payable to law firms	$ 113		$ 113		$ 115
Number of law firms related to entities			2

Amount for accounts payable to related parties.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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