Note 15 - Equity Incentive Plans (Details Textual) - USD ($) $ in Millions | | | | 3 Months Ended | | |
May 18, 2023 | Apr. 19, 2021 | Jun. 01, 2015 | Sep. 30, 2024 | Jun. 30, 2024 | Feb. 13, 2020 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares) | | | | 141,439 | 146,539 | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | | | | 0 | | |
Share-Based Payment Arrangement, Option [Member] | | | | | | |
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | | | | $ 0.1 | | |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | | | | 1 year 8 months 12 days | | |
Restricted Stock [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) | | | | 18,181 | 24,105 | |
Restricted Stock Units (RSUs) [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) | | | | 1,211 | 1,775 | |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | | | | 4 months 24 days | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | | | | 0 | | |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | | | | $ 0.1 | | |
The 2023 Equity Incentive Plan [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) | 200,000 | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | 87,129 | | | 187,422 | | |
The 2023 Equity Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) | 10 years | | | | | |
The 2023 Equity Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Minimum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years | | | | | |
The 2023 Equity Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Maximum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 4 years | | | | | |
The 2023 Equity Incentive Plan [Member] | Restricted Stock and Restricted Stock Units (RSUs) [Member] | Minimum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years | | | | | |
The 2023 Equity Incentive Plan [Member] | Restricted Stock and Restricted Stock Units (RSUs) [Member] | Maximum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 4 years | | | | | |
The 2015 Plan [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | | | | | | 250,000 |
The 2015 Plan [Member] | Share-Based Payment Arrangement, Option [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) | | | 10 years | | | |
The 2015 Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Minimum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | 3 years | | | |
The 2015 Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Maximum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | 4 years | | | |
The 2015 Plan [Member] | Restricted Stock [Member] | | | | | | |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | | | | 2 years 6 months | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | | | | 0 | | |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | | | | $ 0.9 | | |
The 2015 Plan [Member] | Restricted Stock [Member] | Minimum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | 4 years | | | |
The 2015 Plan [Member] | Restricted Stock [Member] | Maximum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | 10 years | | | |
The 2015 Plan [Member] | Restricted Stock Units (RSUs) [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | | 4 years | | | |
Neos 2015 Plan [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | | 5,272 | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares) | | 3,486 | | | | |
Neos 2015 Plan [Member] | Share-Based Payment Arrangement, Option [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) | | 10 years | | | | |
Neos 2015 Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Minimum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | 1 year | | | | |
Neos 2015 Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Maximum [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | | 4 years | | | | |
Neos 2015 Plan [Member] | Restricted Stock Units (RSUs) [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) | | 1,786 | | | | |
Outside Equity Incentive Plan [Member] | Restricted Stock [Member] | | | | | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares) | | | | 838 | | |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | | | | 3 months 18 days | | |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) | | | | 0 | | |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | | | | $ 0.2 | | |