Note 9 - Employee Benefit Plans (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage	100.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	4.00%
Defined Contribution Plan, Cost	$ 236	$ 206
Defined Benefit Plan, Accumulated Benefit Obligation	$ 2,475	$ 2,321
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	4.50%	4.50%
Defined Benefit Plan, Other Cost (Credit)	$ 230	$ 225
Defined Benefit Plan, Plan Assets, Contributions by Employer	76	56
Restricted Stock [Member]
Share-based Payment Arrangement, Expense	74	$ 101
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 57
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	3 years
Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	25.00%
Share-based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	25.00%
Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	25.00%
Share-based Payment Arrangement, Tranche Four[Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	25.00%
Share-based Payment Arrangement, Tranche Two, Three and Tour[Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Amount of defined benefit plan cost (credit), classified as other.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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