Fair Value Measurements (Details Narrative) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Notional amount of interest rate swaps	$ 29,225,700		$ 80,914,500
Derivative liability	(1,105,100)		(1,824,500)
Increase in interest expense	1,908,300	$ 255,200
Credit Facility 1
Principal and accrued interest	84,044,600		84,460,300
Credit Facility 2
Principal and accrued interest	$ 30,519,300		$ 31,003,800