Note 4 - Fair Value (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2018
Other Real Estate Owned, Fair Value Disclosure	$ 0		$ 0		$ 0
Fair Value, Measurements, Nonrecurring [Member]
Assets, Fair Value Disclosure					$ 0
Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member]
Allowance for Loan and Lease Losses, Period Increase (Decrease), Total	$ 55	$ 0	$ 55	$ (17)