Fair Value Measurements (Details 1) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Assets held for lease	$ 0		$ 32,650,000
Assets held for sale	53,409,400		38,041,600
Total	53,409,400		70,691,600
Losses on assets held for lease	0	$ 6,706,600
Losses on assets held for sale	4,204,400	9,674,900
Total losses	4,204,400	$ 16,381,500
Level 1
Assets held for lease	0		0
Assets held for sale	0		0
Total	0		0
Level 2
Assets held for lease	0		0
Assets held for sale	0		0
Total	0		0
Level 3
Assets held for lease	0		32,650,000
Assets held for sale	53,409,400		38,041,600
Total	$ 53,409,400		$ 70,691,600