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Leases (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Leases (Details) [Line Items]    
Operating lease expiring term 1 year  
Description of operating lease On December 22, 2020, the Company acquired CPS which included the assumption of an operating lease for a 55,120 square foot light manufacturing facility located in Addison Illinois, expiring June 30, 2024.  
Rental expense for operating leases $ 0.3  
Borrowing rate 8.50%  
Rent expense $ 0.1 $ 0.5
Slacker leases [Member]    
Leases (Details) [Line Items]    
Rental expense for operating leases 0.5  
React Presents [Member]    
Leases (Details) [Line Items]    
Rental expense for operating leases 0.1  
PodcastOne Leases [Member]    
Leases (Details) [Line Items]    
Rental expense for operating leases $ 0.3