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Note 16 - Share-based Compensation (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 14, 2024
Mar. 20, 2023
Mar. 14, 2023
Feb. 14, 2023
Nov. 01, 2022
Oct. 08, 2022
Aug. 10, 2022
Nov. 01, 2021
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Sep. 30, 2023
Sep. 30, 2021
Mar. 31, 2024
Mar. 16, 2021
Dec. 08, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant                 6,066,639   6,066,639   6,066,639            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross                         942,250            
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period                         7 years            
Dividends                         $ 0   $ 0        
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount                 $ 1,654   $ 1,654   $ 1,654            
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition                         2 years            
Share-Based Payment Arrangement, Expense                 299 $ 396     $ 1,269 $ 1,329          
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit                         $ 1.51            
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit                         $ 6.87            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term                         4 years 10 months 24 days            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value                 368   368   $ 368            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value                 $ 37   $ 37   37            
Share Price                                 $ 2.12    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value                         0 762          
Gross Proceeds from Stock Options Exercised                         $ 0 87          
Vesting Based on Market Conditions [Member]                                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross                         1,849,500            
Common Stock Award [Member]                                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant                 2,427,840   2,427,840   2,427,840            
Performance Shares [Member] | Management [Member]                                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross   450,000         750,000                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period   7 years         7 years                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted                         0            
Share-Based Payment Arrangement, Expense                         $ 127            
Performance Shares [Member] | Vesting Based on Market Conditions [Member] | Management [Member]                                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted   225,000                                  
Restricted Stock Units (RSUs) [Member]                                      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition                         1 year            
Share-Based Payment Arrangement, Expense                 $ 134 $ 211     $ 705 759          
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period                         286,019            
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount                 $ 611   $ 611   $ 611            
Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Employee [Member]                                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross           800,000                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period           7 years                          
Restricted Stock Units (RSUs) [Member] | Board of Directors [Member]                                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period               10,000               145,950      
Shares Granted, Value, Share-Based Payment Arrangement, before Forfeiture               $ 29               $ 989      
Restricted Stock Units (RSUs) [Member] | Non-employee Advisors [Member]                                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period         10,000                            
Shares Granted, Value, Share-Based Payment Arrangement, before Forfeiture         $ 17                     $ 582      
Restricted Stock Units (RSUs) [Member] | Employees [Member]                                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period                               3 years      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period       23,654                              
Shares Granted, Value, Share-Based Payment Arrangement, before Forfeiture       $ 91                              
Restricted Stock Units (RSUs) [Member] | Non-employee Directors [Member]                                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted 30,000   30,000                                
Shares Granted, Value, Share-Based Payment Arrangement, before Forfeiture $ 215   $ 417                                
Share-Based Payment Arrangement, Option [Member] | Employees, Directors, and Consultants [Member]                                      
Share-Based Payment Arrangement, Expense                     $ 166 $ 181 $ 565 $ 566          
2015 Equity Plan [Member]                                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized                                   10,000,000 5,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Proposed Number of Shares Authorized                                     10,000,000
2015 Equity Plan [Member] | Options and RSUs [Member]                                      
Share-based Compensation Arrangement by Share-based Payment Award, Options and Equity Instruments Other than Options, Outstanding, Number                 3,638,799   3,638,799   3,638,799