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Related Party Transactions - Additional Information (Detail) - Management [Member]
$ in Thousands
3 Months Ended
Sep. 30, 2016
USD ($)
Law_Firm
Sep. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
Related Party Transaction [Line Items]      
Legal services to these law firms $ 197 $ 84  
Amount payable to law firms $ 168   $ 75
Number of law firms related to entities | Law_Firm 2