ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule Of Product Warranty Liabilities) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Balance at the beginning of the year	$ 56,465	$ 247,850
Amount accrued		46,322
Payments and credits	(10,142)	(237,707)
Balance at end of the year	$ 46,322	$ 56,465