Note 3 - Loans - Loans Past Due (Details) - USD ($)	Jun. 30, 2016	Jun. 30, 2015
Commercial Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due	$ 123,000
Commercial Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due		25,000
Commercial Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Nonaccrual Status	1,009,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due	123,000	25,000
Financing Receivable Recorded Investment Not Past Due	43,125,000	32,185,000
Financing Receivable, Recorded Investment, Total	43,248,000	32,210,000
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due	59,000	62,000
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due
Commercial Real Estate Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due	2,110,000	30,000
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Nonaccrual Status	384,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due
Financing Receivable Recorded Investment Not Past Due	7,764,000	1,270,000
Financing Receivable, Recorded Investment, Total	7,764,000	1,270,000
Commercial Real Estate Portfolio Segment [Member] | Other Commercial Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Nonaccrual Status	4,000,000	2,079,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due	2,169,000	92,000
Financing Receivable Recorded Investment Not Past Due	150,906,000	143,563,000
Financing Receivable, Recorded Investment, Total	153,075,000	143,655,000
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Total	160,839,000	144,925,000
Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due
Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Past Due	15,000	268,000
Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Past Due
Residential Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due
Residential Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Past Due		68,000
Residential Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Past Due		8,000
Residential Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due
Residential Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Past Due	218,000	139,000
Residential Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Past Due	196,000
Residential Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due
Financing Receivable Recorded Investment Not Past Due	1,270,000	235,000
Financing Receivable, Recorded Investment, Total	1,270,000	235,000
Residential Portfolio Segment [Member] | Residential Real Estate Owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Nonaccrual Status	234,000	190,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due	233,000	475,000
Financing Receivable Recorded Investment Not Past Due	30,947,000	29,654,000
Financing Receivable, Recorded Investment, Total	31,180,000	30,129,000
Residential Portfolio Segment [Member] | Residential Real Estate Non-owner Occupied Loans [Member]
Financing Receivable, Recorded Investment, Nonaccrual Status	407,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due	196,000	8,000
Financing Receivable Recorded Investment Not Past Due	14,278,000	14,547,000
Financing Receivable, Recorded Investment, Total	14,474,000	14,555,000
Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Total	46,924,000	44,919,000
Consumer Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due	7,000	17,000
Consumer Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due
Consumer Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Nonaccrual Status
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due	7,000	17,000
Financing Receivable Recorded Investment Not Past Due	5,809,000	6,949,000
Financing Receivable, Recorded Investment, Total	5,816,000	6,966,000
Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due	204,000	347,000
Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due		101,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due	2,524,000	169,000
Financing Receivable, Recorded Investment, Nonaccrual Status	6,034,000	2,269,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing
Financing Receivable, Recorded Investment, Past Due	2,728,000	617,000
Financing Receivable Recorded Investment Not Past Due	254,099,000	228,403,000
Financing Receivable, Recorded Investment, Total	$ 256,827,000	$ 229,020,000