Note 9 - Commitments and Contingencies - Financial Instruments With Contract Amounts That Represent Credit Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jun. 30, 2018
Commitments to Originate Loans [Member]
Financial instruments which represent credit risks	$ 6,128	$ 20,431
Unfunded Commitments Under Lines of Credit [Member]
Financial instruments which represent credit risks	23,829	29,478
Standby Letters of Credit Risk [Member]
Financial instruments which represent credit risks	$ 3,183	$ 3,183