Loans and Allowance for Loan Losses - Impaired Loans By Loan Portfolio Class (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014
With no related allowance recorded:
Impaired Loans with No Allowance: Recorded Investment	$ 758		$ 763
Impaired Loans with No Allowance: Unpaid Principal Balance	758		763
Impaired Loans with No Allowance: Related Allowance	0		0
Impaired Loans with No Allowance: Average Recorded Investment	760	1,243
Impaired Loans with No Allowance: Interest Income Recognized	10	9
With an allowance recorded:
Impaired Loans with Allowance: Recorded Investment	5,714		6,075
Impaired Loans with Allowance: Unpaid Principal Balance	6,191		6,552
Impaired Loans with Allowance: Related Allowance	775		869
Impaired Loans with Allowance: Average Recorded Investment	5,908	6,819
Impaired Loans with Allowance: Interest Income Recognized	83	51
Total impaired:
Total Impaired Loans: Recorded Investment	6,472		6,838
Total Impaired Loans: Unpaid Principal Balance	6,949		7,315
Total Impaired Loans, Average Recorded Investment	6,668	8,062
Total Impaired Loans, Interest Income Recognized	93	60
Residential Mortgage [Member]
With no related allowance recorded:
Impaired Loans with No Allowance: Recorded Investment	206		206
Impaired Loans with No Allowance: Unpaid Principal Balance	206		206
Impaired Loans with No Allowance: Related Allowance	0		0
Impaired Loans with No Allowance: Average Recorded Investment	206	590
Impaired Loans with No Allowance: Interest Income Recognized	3	0
With an allowance recorded:
Impaired Loans with Allowance: Recorded Investment	2,466		2,700
Impaired Loans with Allowance: Unpaid Principal Balance	2,556		2,790
Impaired Loans with Allowance: Related Allowance	370		441
Impaired Loans with Allowance: Average Recorded Investment	2,585	3,135
Impaired Loans with Allowance: Interest Income Recognized	31	15
Total impaired:
Total Impaired Loans: Recorded Investment	2,672		2,906
Total Impaired Loans: Unpaid Principal Balance	2,762		2,996
Total Impaired Loans, Average Recorded Investment	2,791	3,725
Total Impaired Loans, Interest Income Recognized	34	15
Nonresidential mortgage [Member]
With no related allowance recorded:
Impaired Loans with No Allowance: Recorded Investment	456		461
Impaired Loans with No Allowance: Unpaid Principal Balance	456		461
Impaired Loans with No Allowance: Related Allowance	0		0
Impaired Loans with No Allowance: Average Recorded Investment	458	653
Impaired Loans with No Allowance: Interest Income Recognized	7	9
With an allowance recorded:
Impaired Loans with Allowance: Recorded Investment	2,448		2,572
Impaired Loans with Allowance: Unpaid Principal Balance	2,835		2,959
Impaired Loans with Allowance: Related Allowance	315		338
Impaired Loans with Allowance: Average Recorded Investment	2,522	1,561
Impaired Loans with Allowance: Interest Income Recognized	42	8
Total impaired:
Total Impaired Loans: Recorded Investment	2,904		3,033
Total Impaired Loans: Unpaid Principal Balance	3,291		3,420
Total Impaired Loans, Average Recorded Investment	2,980	2,214
Total Impaired Loans, Interest Income Recognized	49	17
Commercial construction [Member]
With an allowance recorded:
Impaired Loans with Allowance: Recorded Investment			0
Impaired Loans with Allowance: Unpaid Principal Balance			0
Impaired Loans with Allowance: Related Allowance	0		0
Impaired Loans with Allowance: Average Recorded Investment		1,052
Impaired Loans with Allowance: Interest Income Recognized		18
Total impaired:
Total Impaired Loans: Recorded Investment	0		0
Total Impaired Loans: Unpaid Principal Balance	0		0
Total Impaired Loans, Average Recorded Investment	0	1,052
Total Impaired Loans, Interest Income Recognized	0	18
Multi-family [Member]
With an allowance recorded:
Impaired Loans with Allowance: Recorded Investment			0
Impaired Loans with Allowance: Unpaid Principal Balance			0
Impaired Loans with Allowance: Related Allowance	0		0
Impaired Loans with Allowance: Average Recorded Investment		463
Impaired Loans with Allowance: Interest Income Recognized		0
Total impaired:
Total Impaired Loans: Recorded Investment	0		0
Total Impaired Loans: Unpaid Principal Balance	0		0
Total Impaired Loans, Average Recorded Investment	0	463
Total Impaired Loans, Interest Income Recognized	0	0
Home Equity Loans [Member]
With no related allowance recorded:
Impaired Loans with No Allowance: Recorded Investment	96		96
Impaired Loans with No Allowance: Unpaid Principal Balance	96		96
Impaired Loans with No Allowance: Related Allowance	0		0
Impaired Loans with No Allowance: Average Recorded Investment	96	0
Impaired Loans with No Allowance: Interest Income Recognized	0	0
With an allowance recorded:
Impaired Loans with Allowance: Recorded Investment	200		200
Impaired Loans with Allowance: Unpaid Principal Balance	200		200
Impaired Loans with Allowance: Related Allowance	87		87
Impaired Loans with Allowance: Average Recorded Investment	200	0
Impaired Loans with Allowance: Interest Income Recognized	0	0
Total impaired:
Total Impaired Loans: Recorded Investment	296		296
Total Impaired Loans: Unpaid Principal Balance	296		296
Total Impaired Loans, Average Recorded Investment	296	0
Total Impaired Loans, Interest Income Recognized	0	0
Commercial loans [Member]
With an allowance recorded:
Impaired Loans with Allowance: Recorded Investment	600		603
Impaired Loans with Allowance: Unpaid Principal Balance	600		603
Impaired Loans with Allowance: Related Allowance	3		3
Impaired Loans with Allowance: Average Recorded Investment	601	608
Impaired Loans with Allowance: Interest Income Recognized	10	10
Total impaired:
Total Impaired Loans: Recorded Investment	600		603
Total Impaired Loans: Unpaid Principal Balance	600		603
Total Impaired Loans, Average Recorded Investment	601	608
Total Impaired Loans, Interest Income Recognized	$ 10	$ 10