Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Income Tax (Benefit) Expense

Income tax (benefit) expense for respective periods noted is as follows:

	Year Ended December 31,
	2020			2019
Current
Federal, State and Local	$	—		$	—
Deferred
Federal		(4,571	)		(3,342	)
State and Local		(4,147	)		(4,808	)
		(8,718	)		(8,150	)
Less: Valuation allowance reserve		8,718			8,150
	$	—		$	—

Schedule of Effective Income Tax Rate Reconciliation

The reconciliation of the federal statutory income tax rate to the effective income tax rate for the respective period noted is as follows:

	Year Ended December 31,
	2020			2019
U.S. federal statutory rate		21.0	%		21.0	%
U.S. state and local income taxes, net of federal benefit		9.9	%		14.2	%
Permanent differences		(5.8	)%		(3.5	)%
Other		(0.8	)%		15.5	%
Valuation allowance		(24.3	)%		(47.2	)%
Effective tax rate		—	%		—	%

Schedule of Deferred Tax Assets and Liabilities

The tax effects of temporary differences which give rise to the net deferred tax assets for the respective period noted is as follows:

	Year Ended December 31,
	2020			2019
Deferred Tax Assets
Net operating loss	$	21,836		$	14,060
Non-deductible interest expense		517			357
Debt issue costs		205			285
Stock-based compensation expense		1,901			1,213
Patent licenses		14			14
Research and development tax credit carryforwards		396			396
Accrued expenses		552			371
Section 195 deferred start-up costs		24			28
Deferred tax assets	$	25,445		$	16,724
Deferred Tax Liabilities
Depreciation		(19	)		(16	)
Deferred Tax Liabilities	$	(19	)	$	(16	)
Deferred tax assets, net of deferred tax liabilities		25,426			16,708
Less: valuation allowance		(25,426	)		(16,708	)
Deferred tax assets, net after valuation allowance	$	—		$	—