Loans and Allowance for Loan Losses, Delinquent and Nonaccrual Loans by Past Due Status (Details) - USD ($)	Mar. 31, 2016	Jun. 30, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 5,069,000	$ 4,330,000
Current	496,113,000	446,425,000
Total loans	501,182,000	450,755,000
Loans on non-accrual	3,668,000	4,608,000
Loans in the process of foreclosure	1,500,000	1,200,000
Nonaccrual loans with recent history of delinquency greater than 90 days	2,200,000	2,600,000
Nonaccrual loans making payments pursuant to forbearance agreements	78,000
Accruing loans delinquent more than 90 days	78,000	84,000
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,176,000	1,869,000
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	301,000	336,000
90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,592,000	2,125,000
Residential Real Estate and Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans in the process of foreclosure	923,000
Residential Real Estate [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,878,000	2,347,000
Current	229,452,000	224,301,000
Total loans	232,330,000	226,648,000
Loans on non-accrual	1,214,000	1,087,000
Residential Real Estate [Member] | Residential Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,595,000	1,233,000
Residential Real Estate [Member] | Residential Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	286,000	329,000
Residential Real Estate [Member] | Residential Real Estate [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	997,000	785,000
Residential Real Estate [Member] | Construction and Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	23,000	28,000
Current	5,244,000	3,593,000
Total loans	5,267,000	3,621,000
Loans on non-accrual	0	0
Residential Real Estate [Member] | Construction and Land [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	23,000	28,000
Residential Real Estate [Member] | Construction and Land [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Residential Real Estate [Member] | Construction and Land [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Residential Real Estate [Member] | Multi-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Current	3,848,000	4,287,000
Total loans	3,848,000	4,287,000
Loans on non-accrual	0	0
Residential Real Estate [Member] | Multi-family [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Residential Real Estate [Member] | Multi-family [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Residential Real Estate [Member] | Multi-family [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial Real Estate [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,801,000	1,472,000
Current	174,409,000	140,851,000
Total loans	176,210,000	142,323,000
Loans on non-accrual	2,231,000	2,964,000
Commercial Real Estate [Member] | Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,211,000	339,000
Commercial Real Estate [Member] | Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	1,000
Commercial Real Estate [Member] | Real Estate [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	590,000	1,132,000
Commercial Real Estate [Member] | Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Current	12,140,000	8,936,000
Total loans	12,140,000	8,936,000
Loans on non-accrual	0	0
Commercial Real Estate [Member] | Construction [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial Real Estate [Member] | Construction [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial Real Estate [Member] | Construction [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Consumer Loan [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	98,000	277,000
Current	21,224,000	20,742,000
Total loans	21,322,000	21,019,000
Loans on non-accrual	18,000	169,000
Consumer Loan [Member] | Home Equity [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	79,000	244,000
Consumer Loan [Member] | Home Equity [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	14,000	0
Consumer Loan [Member] | Home Equity [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	5,000	33,000
Consumer Loan [Member] | Consumer Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,000	31,000
Current	4,083,000	4,092,000
Total loans	4,084,000	4,123,000
Loans on non-accrual	0	0
Consumer Loan [Member] | Consumer Installment [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	25,000
Consumer Loan [Member] | Consumer Installment [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,000	6,000
Consumer Loan [Member] | Consumer Installment [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	268,000	175,000
Current	45,713,000	39,623,000
Total loans	45,981,000	39,798,000
Loans on non-accrual	205,000	388,000
Commercial Loans [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	268,000	0
Commercial Loans [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Commercial Loans [Member] | 90 Days or More Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 0	$ 175,000