Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Deferred tax assets and liabilities

The Company’s deferred tax assets and liabilities as of December 31, 2017 and 2016 are as follows:

	December 31,
	2017			2016
Deferred tax assets:
NOL carryforward	$	46,326,407		$	60,357,220
R&E credit carryforward		2,559,479			2,559,479
Share-based compensation		345,088			448,534
Inventory reserve		45,338			269,708
Depreciation		71,756			117,629
Accruals and other		247,093			333,126
Total deferred tax assets		49,595,161			64,085,696
Valuation allowance		(49,251,408	)		(63,520,548	)
Deferred tax liabilities:
Intangible assets		(343,753	)		(565,148	)
Net deferred tax liability	$	—		$	—

Expected income tax provision (benefit) from applying federal statutory tax rates to the pre-tax loss and actual income tax provision (benefit)

The difference between the Company’s expected income tax provision (benefit) from applying federal statutory tax rates to the pre-tax loss and actual income tax provision (benefit) relates to the effect of the following:

	2017			2016
Federal income tax benefit at statutory rates		34.0	%		34.0	%
State income tax benefit, net of Federal benefit		6.8	%		6.5	%
Tax reform impact		(134.5	)%		0.0	%
Change in valuation allowance		93.0	%		(37.3	)%
Change in state tax rates and other		0.7	%		(3.2	)%
		0.0	%		0.0	%