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Note 2 - Summary of Significant Accounting Policies (Details Textual)
3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2024
USD ($)
shares
Sep. 30, 2023
USD ($)
shares
Sep. 30, 2024
USD ($)
shares
Sep. 30, 2023
USD ($)
shares
Mar. 31, 2024
USD ($)
Revenue from Contract with Customer, Excluding Assessed Tax $ 32,594,000 $ 28,528,000 $ 65,672,000 $ 56,295,000  
Customer Refund Liability, Current $ 100,000 $ 100,000 $ 100,000 $ 100,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares) | shares 2,251,667 2,281,667 2,251,667 2,281,667  
Restricted Cash, Current $ 30,000   $ 30,000   $ 155,000
Number of Operating Segments     3   3
Goodwill, Impairment Loss     $ 0 $ 0  
Goodwill 23,379,000   23,379,000   $ 23,379,000
Impairment of Intangible Assets, Finite-Lived $ 0 $ 0 $ 176,000 $ 0  
Intellectual Property [Member]          
Finite-Lived Intangible Asset, Useful Life (Year) 15 years   15 years    
Computer Software, Intangible Asset [Member] | Minimum [Member]          
Finite-Lived Intangible Asset, Useful Life (Year) 1 year   1 year    
Computer Software, Intangible Asset [Member] | Maximum [Member]          
Finite-Lived Intangible Asset, Useful Life (Year) 6 years   6 years    
Domain Names, Customer Lists, and Software [Member]          
Finite-Lived Intangible Asset, Useful Life (Year) 5 years   5 years    
Patents [Member]          
Finite-Lived Intangible Asset, Useful Life (Year) 15 years   15 years    
Patents [Member] | Maximum [Member]          
Finite-Lived Intangible Asset, Useful Life (Year) 15 years   15 years    
Noncompete Agreements [Member]          
Finite-Lived Intangible Asset, Useful Life (Year) 3 years   3 years    
Slacker [Member]          
Goodwill $ 9,700,000   $ 9,700,000    
Customer Concentration Risk [Member] | Accounts Receivable [Member]          
Number of Major Customers     1 1  
Customer Concentration Risk [Member] | Accounts Receivable [Member] | One Customer [Member]          
Concentration Risk, Percentage     45.00% 29.00%  
Common Stock Warrants [Member]          
Class of Warrant or Right, Outstanding (in shares) | shares 4,949,399 0 4,949,399 0  
Restricted Stock Units (RSUs) [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number (in shares) | shares 1,726,237 2,874,855 1,726,237 2,874,855  
Barter Transactions [Member]          
Revenue from Contract with Customer, Excluding Assessed Tax $ 6,000,000 $ 3,600,000 $ 12,000,000 $ 7,700,000