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Stock-based Compensation- Summary of ESOP Shares (Detail) - USD ($)
$ in Thousands
Jun. 30, 2015
Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Allocated shares 55,771 37,571
Shares committed for release 19,245 19,245
Unearned shares 307,920 327,165
Total ESOP shares 382,936 383,981
Fair value of unearned ESOP shares $ 5,090 $ 5,395