Derivative Instruments (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Change in value of interst rate swaps	$ (10,000)	$ 3,700	$ 1,980,500	$ 455,100
Reclassification from other comprehensive income	149,100	28,000	538,500	5,900
Reclassification from other comprehensive income - forecasted transaction not probable to occur	0	0	1,167,700	0
Included in interest expense	139,100	31,700	3,686,700	461,000
Unrealized gain/(loss) on derivative instruments	0	(174,500)	(575,000)	(1,985,100)
Reclassification from other comprehensive income	149,100	28,000	538,500	5,900
Reclassification from other comprehensive income - forecasted transaction not probable to occur	0	0	1,167,700	0
Change in value of hedged Swaps	$ 149,100	$ (146,500)	$ 1,131,200	$ (1,979,200)