LONG-TERM DEBT - Interest Expense (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
LONG-TERM DEBT
Interest expense	$ 10,665,000	$ 8,655,000	$ 7,034,000
Amortization of Loan Costs	443,902	495,438	509,263
Amortization of Discount on Convertible Notes	1,357,347	1,273,436	1,194,714
Capitalized Interest			(215,000)
Total Interest Expense	12,466,000	10,423,000	8,523,000
Total Interest Paid	$ 10,782,000	$ 8,419,000	$ 7,060,000