LONG-TERM DEBT - Interest Expense (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
LONG-TERM DEBT
Interest expense	$ 2,598,000	$ 2,085,000	$ 5,084,000	$ 4,185,000
Amortization of Loan Costs	107,000	137,000	213,008	286,639
Amortization of Discount on Convertible Notes	337,000	316,000	667,847	626,562
Total Interest Expense	3,042,000	2,538,000	5,965,000	5,099,000
Total Interest Paid	$ 1,636,000	$ 1,291,000	$ 5,067,000	$ 4,190,000