Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Deferred tax assets and liabilities

	December 31,
	2016			2015
Deferred tax assets:
NOL carryforward	$	60,357,220		$	38,797,762
R&E credit carryforward		2,559,479			1,994,478
Share-based compensation		448,534			383,153
Inventory reserve		269,708			226,299
Depreciation		117,629			313,714
Accruals and other		333,126			495,640
Total deferred tax assets		64,085,696			42,211,046
Valuation allowance		(63,520,548	)		(41,554,045	)
Deferred tax liabilities:
Intangible assets		(565,148	)		(657,001	)
Fixed assets		—			—
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)

	2016			2015
Federal income tax benefit at statutory rates		34.0	%		34.0	%
State income tax benefit, net of Federal benefit		6.5	%		3.3	%
Change in valuation allowance		(37.3	)%		(32.1	)%
Change in state tax rates and other		(3.2	)%		(4.5	)%
		0.0	%		0.7	%