QUALIFYING ACCOUNTS (Details) - Allowance for doubtful accounts - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Valuation and Qualifying Accounts
Balance at Beginning of Period	$ 1,453,695	$ 240,111	$ 532,161
Additions, Charged to Costs and Expenses	436,222	1,846,237	445,909
Deductions	1,058,341	632,653	737,959
Balance at end of Period	$ 831,576	$ 1,453,695	$ 240,111