Fair Value Measurements and Fair Value of Financial Instruments - Carrying Amount and Estimated Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents, Carrying Amount	$ 11,676	$ 6,222	$ 10,430	$ 7,742
Long term certificate of deposit, Carrying Amount	250	250
Securities available for sale, Carrying Amount	52,301	69,644
Securities held to maturity, at amortized cost	178,658	176,519
Federal Home Loan Bank stock, Carrying Amount	2,540	1,388
Net loans, Carrying Amount	387,083	359,426
Accrued interest receivable, Carrying Amount	2,754	2,663
Deposits, Carrying Amount	549,435	558,439
Federal Home Loan Bank borrowings, Carrying Amount	40,200	14,600
Accrued Interest Payable, Carrying Amount	59	55
Cash and cash equivalents	11,676	6,222
Long term certificate of deposit	250	250
Securities available for sale, at fair value	52,301	69,644
Securities held-to-maturity, fair value	177,596	177,660
Federal Home Loan Bank stock	2,540	1,388
Net loans	393,360	367,377
Accrued interest receivable	2,754	2,663
Deposits	549,559	558,517
Federal Home Loan Bank borrowings	39,920	14,378
Accrued interest payable	59	55
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, Carrying Amount	5,358	5,345
Cash and cash equivalents	11,676	6,222
Long term certificate of deposit	250	250
Securities available for sale, at fair value	5,358	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	46,943	64,299
Cash and cash equivalents	0	0
Long term certificate of deposit	0	0
Securities available for sale, at fair value	46,943	64,299
Securities held-to-maturity, fair value	177,596	177,660
Federal Home Loan Bank stock	2,540	1,388
Net loans	0	0
Accrued interest receivable	2,754	2,663
Deposits	549,559	558,517
Federal Home Loan Bank borrowings	39,920	14,378
Accrued interest payable	59	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	393,360	367,377
Accrued interest receivable	0	0
Deposits	0	0
Federal Home Loan Bank borrowings	0	0
Accrued interest payable	$ 0	$ 0