LONG-TERM DEBT - Interest Expense (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
LONG-TERM DEBT
Interest expense	$ 2,100,000	$ 1,657,000
Amortization of Loan Costs	149,895	113,288
Amortization of Discount on Convertible Notes	310,782	291,570
Total Interest Expense	2,561,000	2,062,000
Interest paid	$ 2,899,000	$ 2,550,000