LONG-TERM DEBT - Components (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Long-term debt
Long-term debt	$ 283,901,632
Loan Costs, net of accumulated amortization	(1,173,179)	$ (1,026,967)
Long-Term Debt	282,087,031	247,624,811
Credit Facility
Long-term debt
Long-term debt	154,845,349	120,745,579
Wells Fargo Mortgage Note Payable Originated September 30, 2014
Long-term debt
Long-term debt	$ 30,000,000	30,000,000
Long-term debt due within one year
Stated interest rate (as a percent)	4.33%
Wells Fargo Mortgage Note Payable Originated April 15, 2016
Long-term debt
Long-term debt	$ 24,056,283	24,557,468
4.50% Convertible Senior Notes due 2020
Long-term debt
Long-term debt, net of discount	$ 74,358,578	$ 73,348,731
Long-term debt due within one year
Stated interest rate (as a percent)	4.50%	4.50%