Fair Value Measurements and Fair Value of Financial Instruments - Carrying Amount and Estimated Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, Carrying Amount	$ 55,599	$ 6,222	$ 38,428	$ 7,742
Long term certificate of deposit, Carrying Amount	250	250
Securities available for sale, Carrying Amount	51,280	69,644
Securities held to maturity, at amortized cost	177,089	176,519
Federal Home Loan Bank stock, Carrying Amount	1,383	1,388
Net loans, Carrying Amount	392,480	359,426
Accrued interest receivable, Carrying Amount	2,967	2,663
Deposits, Carrying Amount	621,238	558,439
Federal Home Loan Bank borrowings, Carrying Amount	14,500	14,600
Accrued Interest Payable, Carrying Amount	66	55
Cash and cash equivalents	55,599	6,222
Long term certificate of deposit	250	250
Securities available for sale, at fair value	51,280	69,644
Securities held-to-maturity, fair value	176,303	177,660
Federal Home Loan Bank stock	1,383	1,388
Net loans	398,252	367,377
Accrued interest receivable	2,967	2,663
Deposits	621,365	558,517
Federal Home Loan Bank borrowings	14,157	14,378
Accrued interest payable	66	55
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, Carrying Amount	5,357	5,345
Cash and cash equivalents	55,599	6,222
Long term certificate of deposit	250	250
Securities available for sale, at fair value	5,357	5,345
Securities held-to-maturity, fair value	0	0
Federal Home Loan Bank stock	0	0
Net loans	0	0
Accrued interest receivable	0	0
Deposits	0	0
Federal Home Loan Bank borrowings	0	0
Accrued interest payable	0	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, Carrying Amount	45,923	64,299
Cash and cash equivalents	0	0
Long term certificate of deposit	0	0
Securities available for sale, at fair value	45,923	64,299
Securities held-to-maturity, fair value	176,303	177,660
Federal Home Loan Bank stock	1,383	1,388
Net loans	0	0
Accrued interest receivable	2,967	2,663
Deposits	621,365	558,517
Federal Home Loan Bank borrowings	14,157	14,378
Accrued interest payable	66	55
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, Carrying Amount	0	0
Cash and cash equivalents	0	0
Long term certificate of deposit	0	0
Securities available for sale, at fair value	0	0
Securities held-to-maturity, fair value	0	0
Federal Home Loan Bank stock	0	0
Net loans	398,252	367,377
Accrued interest receivable	0	0
Deposits	0	0
Federal Home Loan Bank borrowings	0	0
Accrued interest payable	$ 0	$ 0