ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Tables)

3 Months Ended

Mar. 31, 2021

Payables and Accruals [Abstract]

Accrued liabilities

	March 31,		December 31,
	2021		2020
Patent and legal costs	$	70	$	65
Accrued compensation		443		563
Warranty costs		58		48
Consulting costs		-		2
Taxes and other		22		43
Accrued liabilities	$	593	$	721