INCOME TAXES (Details 3) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Accrued compensation and benefits	$ 32	$ 49
Inventory reserves	17	1
Allowance for doubtful accounts	1	4
Warranty reserves	124	165
Intangible and other assets	535	994
Net operating loss carryforwards	3,980	3,897
Property, equipment and other	65	44
Research and development credit	2,357	2,230
Total deferred tax asset	7,111	7,384
Less: valuation allowance	(7,013)	(7,319)
Net deferred tax assets:	98	65
Deferred tax liabilities:
Prepaid expenses and other	(42)	(27)
Total deferred tax liability	(42)	(27)
Total net deferred tax asset	$ 56	$ 38