Notes Payable and Accrued Interest, Components (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Notes Payable and Accrued Interest [Abstract]
Principal	$ 0	$ 9,211,200
Unamortized debt issuance costs	(5,497,700)	(674,300)
Notes payable and accrued interest	131,230,700	131,092,200
Special Purpose Financing [Member]
Notes Payable and Accrued Interest [Abstract]
Unamortized debt issuance costs	(1,368,500)	0
Accrued interest	118,300	16,000
Term Loans [Member]
Notes Payable and Accrued Interest [Abstract]
Principal	42,729,400	0
Credit Facility [Member]
Notes Payable and Accrued Interest [Abstract]
Principal	93,700,000	122,400,000
Unamortized debt issuance costs	(4,129,200)	(674,300)
Accrued interest	$ 180,700	$ 139,300