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Note 8 - Noncontrolling Interest - Clyra Medical (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 03, 2022
Jun. 30, 2020
Dec. 30, 2015
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2020
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Apr. 08, 2022
Debt Conversion, Original Debt, Amount                       $ 0 $ 328,000    
Stock Issued During Period, Value, Issued for Services       $ 96,000 $ 59,000 $ 17,000   $ 60,000 $ 111,000            
Stock Issued During Period, Value, New Issues       $ 1,117,000 $ 948,000 $ 1,202,000 $ 123,000 $ 1,414,000 $ 2,106,000            
Clyra Medical [Member]                              
Stock Issued During Period, Value, New Issues                       $ 0 $ 50,000    
Shares Issued, Price Per Share (in dollars per share)       $ 310     $ 310         $ 310 $ 310    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)       1,403     2,074         1,403 2,074 14,004  
Clyra Medical [Member] | Employees and Consultants [Member]                              
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)                   $ 1.00          
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)                       10 years      
Clyra Medical [Member] | Employees and Consultants [Member] | Share-Based Payment Arrangement, Option [Member]                              
Stock Issued During Period, Value, Issued for Services                       $ 304,000 $ 442,000    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Discount Rate                       30.00%      
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate                       40.00%      
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year)                       10 years      
Clyra Medical [Member] | Employees and Consultants [Member] | Share-Based Payment Arrangement, Option [Member] | Minimum [Member]                              
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate                       2.32%      
Clyra Medical [Member] | Employees and Consultants [Member] | Share-Based Payment Arrangement, Option [Member] | Maximum [Member]                              
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate                       3.83%      
Clyra Medical [Member] | Beach House Consulting, LLC [Member]                              
Consulting Services, Monthly Payment     $ 23,000                        
Consulting Services, Period of Services (Year)     4 years                        
Stock Issued During Period, Shares, Issued for Services (in shares)                     3,639        
Consulting Services, Three Consecutive Month Average Revenue Threshold for Consulting Fees to Accrue                           $ 250,000  
Stock Issued During Period, Value, Issued for Services                           $ 591,000  
Clyra Medical [Member] | Revolving Credit Facility [Member] | Vernal Bay Capital Group, LLC [Member] | Inventory Line of Credit [Member]                              
Debt Instrument, Interest Rate, Stated Percentage       15.00%               15.00%      
Line of Credit Facility, Maximum Borrowing Capacity   $ 1,000,000                 $ 1,000,000        
Proceeds from Lines of Credit, Total   260,000                          
Repayments of Lines of Credit   $ 97,000                          
Long-Term Line of Credit, Total       $ 163,000               $ 163,000      
Line of Credit Facility, Covenant, Additional Draws, Maximum Percentage of Total Principal Outstanding Allowed       50.00%               50.00%      
Line of Credit Facility, Covenant, Additional Draws, Minimum Amount Allowed       $ 200,000               $ 200,000      
Line of Credit Facility, Monthly Percentage of Gross Product Sales Required to be Used as Payment of Debt after the First 180 Days       60.00%               60.00%      
Stock Issued During Period, Shares, Commitment Fee (in shares)                       323      
Stock Issued During Period, Value, Commitment Fee                       $ 70,000      
Clyra Medical [Member] | Notes Payable, Other Payables [Member]                              
Debt Instrument, Face Amount                             $ 100,000
Debt Instrument, Interest Rate, Stated Percentage                             8.00%
Debt Instrument, Convertible, Sale of Stock Amount                             $ 5,000,000
Debt Instrument, Convertible, Conversion Percentage                             70.00%
Conversion of Working Capital Advances into Clyra Medical Common Stock [Member]                              
Debt Conversion, Original Debt, Amount $ 633,000                            
Debt Conversion, Converted Instrument, Shares Issued (in shares) 2,042                            
Debt Instrument, Convertible, Conversion Price (in dollars per share) $ 310                            
Clyra Medical Technologies [Member]                              
Noncontrolling Interest, Ownership Percentage by Parent       58.00%               58.00%