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Debt - Financial covenant (Details) - USD ($)
Feb. 01, 2021
Oct. 01, 2020
Apr. 13, 2020
Mar. 31, 2020
Dec. 31, 2020
Nov. 22, 2017
Sep. 30, 2016
Debt Instrument [Line Items]              
End of term charge         $ 534,237    
Senior debt              
Debt Instrument [Line Items]              
Stated interest rate     11.50% 10.75%      
End of term fee paid $ 534,375 $ 534,375          
End of term charge           $ 1,068,750 $ 787,500
Senior debt | Prime rate              
Debt Instrument [Line Items]              
Spread on variable rate     4.25% 4.50%