Note 4 - Loans, Allowance for Loan Losses and Credit Quality - Loan Portfolio (Details) - USD ($)	Dec. 31, 2018	Jun. 30, 2018
Loans	$ 938,286,000	$ 871,802,000
SBA Loan [Member]
Loans	67,282	60,156
Financial Asset Originated [Member]
Loans	607,643,000	580,830,000
Financial Asset Originated [Member] | SBA Loan [Member]
Loans	67,282	60,156
Financial Asset Acquired with Credit Deterioration [Member]
Loans	330,643,000	290,972,000
Financial Asset Acquired with Credit Deterioration [Member] | SBA Loan [Member]
Loans
Commercial Real Estate Portfolio Segment [Member]
Loans	572,712,000	525,479,000
Commercial Real Estate Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans	259,451,000	249,428,000
Commercial Real Estate Portfolio Segment [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans	313,261,000	276,051,000
Commercial Portfolio Segment [Member]
Loans	202,938,000	182,795,000
Commercial Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans	202,150,000	181,800,000
Commercial Portfolio Segment [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans	788,000	995,000
Residential Portfolio Segment [Member]
Loans	92,566,000	100,128,000
Residential Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans	75,972,000	86,202,000
Residential Portfolio Segment [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans	16,594,000	13,926,000
Consumer Portfolio Segment [Member]
Loans	2,788,000	3,244,000
Consumer Portfolio Segment [Member] | Financial Asset Originated [Member]
Loans	2,788,000	3,244,000
Consumer Portfolio Segment [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans