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Note 10 - Share-based Compensation (Details Textual) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Share-based Payment Arrangement, Expense | $ 200 | $ 500
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total | $ 1,800 |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition | 2 years 109 days |
Share-based Payment Arrangement, Amount Capitalized | $ 0 | $ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Contractual Term | 10 years |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | 34,188 |
Restricted Stock [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Ending Balance | 0 |
Independent Directors [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years |
Employees [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | 0 | 0
Stock Option Plan 1992 [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | 1,470,810 |

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- Definition Contractual term for option awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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