Note 11 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	As of December 31,
	2018			2017
Expected federal income tax benefit	$	(2,395,036	)	$	(2,761,678	)
Stock compensation		169,957			197,336
Other permanent items		1,616			2,668
Effect of change in valuation allowance		2,223,463			(15,344,015	)
Prior year true-up					(126,031	)
Tax rate change					1,912,427
Effect of NOL limitation					16,119,293
Actual federal income tax benefit	$			$

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	Year Ended December 31,
	2018			2017
Deferred tax assets
Obsolete inventory	$	21,881		$	21,881
Accrued vacation		33,755			31,051
Accrued bonuses		99,666
Stock-based compensation		968,170			620,789
Basis difference in fixed assets		33,241			33,241
Intangible assets, net		572,687			634,521
Contribution, carryforward		707			677
Net operating loss carryforwards		2,588,401			747,589
Capital loss carryforward		1,027,111			1,027,111
Valuation allowance		(5,312,769	)		(3,089,306	)
Deferred tax asset	$	32,850		$	27,554
Deferred tax liabilities
Other	$	(32,850	)	$	(27,554	)
Net deferred tax asset	$			$