Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of Components of Deferred Tax Assets and Liabilities

The primary components of the deferred tax assets and liabilities at December 31, 2018 and 2017 were as follows (in thousands):

	2018			2017
Deferred tax assets/(liabilities):
Net operating loss carryforwards and capital loss carryforwards		15,204			11,414
Research and development credit carryforwards		2,444			2,141
Marketable equity securities		393			-
Patents and fixed assets		523			268
Stock-based and other compensation		1,326			1,260
Total		19,890			15,083
Valuation Allowance		(19,890	)		(15,083	)
Net deferred tax asset (liability)	$	-		$	-

Schedule of Income Tax Reconciliation

Income taxes differed from the amounts computed by applying the applicable U.S. federal income tax rates indicated to pretax losses from operations as a result of the following:

	2018			2017
Computed tax benefit at federal statutory rate		21	%		34	%
Re-rate of federal net deferred tax assets		-	%		(35	)%
Permanent differences		-	%		(8	)%
State tax benefit		10	%		3	%
Research and development credits		1	%		1	%
Other		(1	)%		-	%
Adjust basis for available-for-sale-securities		-	%		11	%
Change in valuation allowance		(31	)%		(6	)%
		-	%		-	%