Note 10 - Fair Value Measurements - Quantitative Information (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Jun. 30, 2018
Valuation, Market Approach [Member] | Collateral Dependent Impaired Loans [Member]
Assets measured at fair value on a nonrecurring basis	[1]	$ 2,408	$ 1,917
Valuation, Market Approach [Member] | Real Estate Owned and Other Repossessed Collateral [Member]
Assets measured at fair value on a nonrecurring basis	[1]	1,463	2,223
Valuation, Income Approach [Member] | Loan Servicing Rights [Member]
Servicing rights, net	[2]	$ 2,934	$ 2,970

[1] Fair value is generally determined through independent appraisals of the underlying collateral. The Company may also use another available source of collateral assessment to determine a reasonable estimate of the fair value of the collateral. Appraisals may be adjusted by management for qualitative factors such as economic factors and estimated liquidation expenses. The range of these possible adjustments was 0% to 100%.

[2] Fair value is determined using a discounted cash flow model. The unobservable inputs include anticipated rate of loan prepayments and discount rates. The range of prepayment assumptions used was 10.6% to 12.4%. For discount rates, the range was 8.8% to 17.7%.