Note 13 - Share-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended							12 Months Ended
	Oct. 31, 2023	Apr. 30, 2023	Jun. 30, 2022	Apr. 30, 2022	Jun. 30, 2021	Jun. 30, 2020	May 31, 2019	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2017
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number								4,657,635	5,491,399
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross								2,592,309
Share-Based Payment Arrangement, Expense								$ 1,985	$ 3,225
Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate								0.00%	0.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term								6 years	5 years 11 months 15 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate								76.00%	49.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate								4.21%	2.47%
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount								$ 3,103
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition								2 years 7 months 24 days
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period	482,143							1,289,784	988,850
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount								$ 1,144
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition								1 year 9 months 21 days
The 2017 Stock Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized			9,000,000							2,000,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized			1,500,000		1,500,000	1,900,000	2,100,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant								1,391,183
Share-Based Payment Arrangement, Accelerated Cost		$ 112
The 2017 Stock Incentive Plan [Member] | Service-based Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number								2,675,071
The 2017 Stock Incentive Plan [Member] | Performance-based Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number								1,982,564
The 2017 Stock Incentive Plan [Member] | Performance-based Options [Member] | Chief Executive Officer [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross	1,290,166			692,398
The 2017 Stock Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Expense								$ 967	$ 1,770
The 2017 Stock Incentive Plan [Member] | Performance Shares [Member] | Chief Executive Officer and President [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross	1,290,166
Share Price	$ 1.4
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term	10 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate	76.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	4.65%
The 2017 Stock Incentive Plan [Member] | Performance Shares [Member] | Chief Executive Officer and President [Member] | Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period	1 year
The 2017 Stock Incentive Plan [Member] | Performance Shares [Member] | Chief Executive Officer and President [Member] | Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Requisite Service Period	3 years
The 2017 Stock Incentive Plan [Member] | Performance Shares [Member] | Chief Executive Officer and President [Member] | Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vesting, Sustained Market Capitalization	$ 100,000
The 2017 Stock Incentive Plan [Member] | Performance Shares [Member] | Chief Executive Officer and President [Member] | Share-Based Payment Arrangement, Tranche Two [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vesting, Sustained Market Capitalization	150,000
The 2017 Stock Incentive Plan [Member] | Performance Shares [Member] | Chief Executive Officer and President [Member] | Share-Based Payment Arrangement, Tranche Three [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vesting, Sustained Market Capitalization	$ 200,000
The 2017 Stock Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Expense								$ 1,018	$ 1,455