INCOME TAXES (Details 3) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets (liabilities):
Accrued compensation and benefits	$ 14	$ 32
Inventory reserves	9	17
Allowance for doubtful accounts	1	1
Prepaid expenses and other	(52)	(42)
Warranty reserves	62	124
Intangible and other assets	(43)	535
Net operating loss carryforwards	4,533	3,980
Property, equipment and other	(233)	65
Research and development credit	2,672	2,357
Total deferred tax asset	6,963	7,069
Less: valuation allowance	(1,743)	(7,013)
Total deferred tax assets:	$ 5,220	$ 56