Note 4 - Fair Value - Financial Assets and Liabilities Measured at Fair Value on a Non-recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017
Assets, Fair Value Disclosure, Nonrecurring	$ 0
Commercial Real Estate - Other [Member]
Assets, Fair Value Disclosure, Nonrecurring		$ 130
Commercial Real Estate - Other [Member] | Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure, Nonrecurring
Commercial Real Estate - Other [Member] | Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure, Nonrecurring
Commercial Real Estate - Other [Member] | Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure, Nonrecurring		130
Residential Real Estate Owner Occupied Loans [Member]
Assets, Fair Value Disclosure, Nonrecurring		71
Residential Real Estate Owner Occupied Loans [Member] | Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure, Nonrecurring
Residential Real Estate Owner Occupied Loans [Member] | Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure, Nonrecurring
Residential Real Estate Owner Occupied Loans [Member] | Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure, Nonrecurring		$ 71