LONG-TERM DEBT - Interest Expense (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
LONG-TERM DEBT
Interest expense	$ 2,085,000	$ 1,736,000	$ 4,185,000	$ 3,393,000
Amortization of Loan Costs	137,000	112,000	286,639	224,987
Amortization of Discount on Convertible Notes	316,000	296,000	626,562	587,828
Total Interest Expense	2,538,000	2,144,000	5,099,000	4,206,000
Total Interest Paid	$ 1,291,000	$ 887,000	$ 4,190,000	$ 3,438,000