Fair Value of Assets and Liabilities - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014		Sep. 30, 2013	Jun. 30, 2013
Financial assets:
Cash and cash equivalents	$ 18,356	$ 12,667		$ 35,674	$ 25,618
Securities available for sale, at fair value	131,235	133,936
Securities held to maturity, at cost	10,615	9,302
Federal Home Loan Bank stock	6,810	6,648
Loans held for sale	1,384	330
Loans, net	506,145	507,635
Accrued interest receivable	1,646	1,688
Financial liabilities:
Deposits	489,618	491,732
Short-term borrowings	12,000	4,000
Long-term debt	111,778	112,446
Mortgagors' escrow accounts	1,201	1,184
Level 1
Financial assets:
Cash and cash equivalents	18,356	12,667
Securities available for sale, at fair value	78	79
Securities held to maturity, at cost	0	0
Federal Home Loan Bank stock	0	0
Loans held for sale	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Mortgage servicing rights	0	0	[1]
Financial liabilities:
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Mortgagors' escrow accounts	0	0
Level 2
Financial assets:
Cash and cash equivalents	0	0
Securities available for sale, at fair value	131,157	133,857
Securities held to maturity, at cost	0	0
Federal Home Loan Bank stock	0	0
Loans held for sale	1,384	330
Loans, net	0	0
Accrued interest receivable	0	0
Mortgage servicing rights	0	0	[1]
Financial liabilities:
Deposits	0	0
Short-term borrowings	12,000	4,000
Long-term debt	114,612	113,823
Mortgagors' escrow accounts	0	0
Level 3
Financial assets:
Cash and cash equivalents	0	0
Securities available for sale, at fair value	0	0
Securities held to maturity, at cost	10,615	9,302
Federal Home Loan Bank stock	6,810	6,648
Loans held for sale	0	0
Loans, net	510,652	513,765
Accrued interest receivable	1,646	1,688
Mortgage servicing rights	870	792	[1]
Financial liabilities:
Deposits	490,966	493,500
Short-term borrowings	0	0
Long-term debt	0	0
Mortgagors' escrow accounts	1,201	1,184
Carrying Amount
Financial assets:
Cash and cash equivalents	18,356	12,667
Securities available for sale, at fair value	131,235	133,936
Securities held to maturity, at cost	10,615	9,302
Federal Home Loan Bank stock	6,810	6,648
Loans held for sale	1,384	330
Loans, net	506,145	507,635
Accrued interest receivable	1,646	1,688
Mortgage servicing rights	870	792	[1]
Financial liabilities:
Deposits	489,618	491,732
Short-term borrowings	12,000	4,000
Long-term debt	111,778	112,446
Mortgagors' escrow accounts	1,201	1,184
Fair Value
Financial assets:
Cash and cash equivalents	18,356	12,667
Securities available for sale, at fair value	131,235	133,936
Securities held to maturity, at cost	10,615	9,302
Federal Home Loan Bank stock	6,810	6,648
Loans held for sale	1,384	330
Loans, net	510,652	513,765
Accrued interest receivable	1,646	1,688
Mortgage servicing rights	870	792	[1]
Financial liabilities:
Deposits	490,966	493,500
Short-term borrowings	12,000	4,000
Long-term debt	114,612	113,823
Mortgagors' escrow accounts	$ 1,201	$ 1,184

[1] Included in other assets