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Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets (liabilities):
Reserves	$ 175	$ 233
Property and equipment	(83)	462
Accrued expenses	265	822
Right-of-use Asset	(414)
Right-of-use Liability	419
Severance		65
IRC 163(j) Interest Deduction	17	591
Non-qualified stock options	528	336
R&D credits	1,801	1,538
Net foreign carryforwards	2,768	2,214
Net operating loss and credit carryforwards	34,754	33,988
Intangibles	(1,128)	(672)
Total deferred tax assets, net	39,102	39,577
Valuation allowance	(39,277)	(39,705)
Net deferred tax liabilities	$ (175)	$ (128)

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