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Notes Payable (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Mar. 20, 2021
Jun. 17, 2020
Apr. 30, 2020
Jun. 30, 2021
Mar. 31, 2021
Mar. 31, 2015
Dec. 31, 2014
Notes Payable (Details) [Line Items]              
Aggregate principal amount         $ 0.5    
Proceeds from a loan     $ 2.0        
Convertible Notes Payable [Member]              
Notes Payable (Details) [Line Items]              
Aggregate principal amount       $ 0.4 0.4   $ 0.2
Bears interest           6.00%  
Accrued interest       $ 0.1 $ 0.1    
Proceeds from a loan $ 0.6 $ 0.2          
Balance is payable years   30 years          
Interest at a rate   3.75%   1.00%