Net Income Per Share - Additional Information (Detail) (USD $)	0 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Schedule Of Earnings Per Share [Line Items]
Shares controlled by Employee Stock Ownership Plan (ESOP)	200,569	296,095
Options Expiring November 2020 [Member]
Schedule Of Earnings Per Share [Line Items]
Options excluded from computation of earnings per share	32,353	65,386
Options purchase price per diluted share	$ 10.35	$ 10.35
Options Expiring November 2021 [Member]
Schedule Of Earnings Per Share [Line Items]
Options excluded from computation of earnings per share	51,707	78,424
Options purchase price per diluted share	$ 11.00	$ 11.00
Options Expiring November 2022 [Member]
Schedule Of Earnings Per Share [Line Items]
Options excluded from computation of earnings per share	120,556	190,335
Options purchase price per diluted share	$ 10.50	$ 10.50
Options Expiring November 2023 [Member]
Schedule Of Earnings Per Share [Line Items]
Options excluded from computation of earnings per share	258,354
Options purchase price per diluted share	$ 13.36