Quarterly Data (Unaudited) - Schedule of Quarterly Financial Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Quarterly Financial Information Disclosure [Abstract]
Interest and dividend income	$ 6,501	$ 6,434	$ 6,428	$ 6,149	$ 6,094	$ 5,924	$ 6,121	$ 6,209	$ 25,512	$ 24,348	$ 24,833
Interest expense	1,286	1,292	1,331	1,261	1,317	1,346	1,414	1,408	5,170	5,485	5,764
Net interest income	5,215	5,142	5,097	4,888	4,777	4,578	4,707	4,801	20,342	18,863	19,069
Provision for loan losses	150	150	150	100	350	100	175	50	550	675	425
Non-interest income	837	788	911	1,103	986	1,177	1,072	966	3,638	4,202	3,240
Non-interest expense	3,922	4,184	4,260	4,005	4,448	4,346	4,381	4,464	16,371	17,639	17,085
Provision for income taxes	714	575	577	679	347	485	453	492	2,544	1,777	1,783
Net income	$ 1,266	$ 1,021	$ 1,021	$ 1,207	$ 618	$ 824	$ 770	$ 761	$ 4,515	$ 2,974	$ 3,016
Basic earnings per share (in shares)	$ 0.24	$ 0.19	$ 0.19	$ 0.23	$ 0.12	$ 0.15	$ 0.14	$ 0.14	$ 0.85	$ 0.55	$ 0.52
Diluted earnings per share (in shares)	$ 0.23	$ 0.19	$ 0.19	$ 0.22	$ 0.11	$ 0.15	$ 0.14	$ 0.14	$ 0.83	$ 0.54	$ 0.51
Weighted average shares outstanding:
Basic (in shares)	5,327,928	5,313,484	5,300,289	5,274,900	5,372,849	5,389,400	5,401,349	5,495,803	5,304,151	5,414,851	5,806,977
Diluted (in shares)	5,458,803	5,439,177	5,443,078	5,401,982	5,519,703	5,560,481	5,527,472	5,584,946	5,435,761	5,548,151	5,888,591