Supplemental disclosure of non-cash financing activities: (Details) - USD ($)	1 Months Ended		12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020	Mar. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			$ 1,830,858
Extinguishment of Debt, Amount	$ 722,577	$ 722,577