SEGMENT INFORMATION (Schedule of total revenues and accounts receivable by geographic area) (Details) - USD ($)		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Summary of total revenues and accounts receivable by geographic area
Total Revenues		$ 1,355,363	$ 1,895,240
Accounts receivable		182,871	378,179
United States [Member]
Summary of total revenues and accounts receivable by geographic area
Total Revenues		1,043,384	1,420,447
Accounts receivable		157,725	218,935
Foreign [Member]
Summary of total revenues and accounts receivable by geographic area
Total Revenues	[1]	311,979	474,793
Accounts receivable		$ 25,146	$ 159,244

[1] Net revenues to any one foreign country did not exceed 10% for the years ended December 31, 2020 or 2019.