Note 12 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

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

	December 31, 2016			December 31, 2015
Deferred tax assets:
Net operating loss carryforward	$	31,980,117		$	28,475,616
Stock-based compensation		4,496,398			4,240,612
Total deferred tax assets		36,476,515			32,716,228
Deferred tax liabilities:
Fixed assets		(17,261	)		(348,869	)
Less: valuation allowance		(36,459,254	)		(32,367,359	)
	$	--		$	--

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

	December 31, 2016					December 31, 2015					December 31, 2014
Federal statutory rate	$	(2,673,920	)	35.0	%	$	(3,457,068	)	35.0	%	$	(3,610,711	)	35.0	%
State income taxes – Idaho		(2,455	)	0.03	%		(7,652	)	0.1	%		(11,016	)	0.1	%
State income taxes - Utah		(191,070	)	2.5	%		(243,973	)	2.5	%		(239,093	)	2.3	%
State and local income taxes - NY		(28,559	)	0.4	%		(30,468	)	0.3	%		(46,372	)	0.4	%
Change in valuation allowance		4,091,895		(53.6	% )		5,672,480		(57.5	% )		4,935,302		(47.8	% )
Net nontaxable income related to derivatives		(1,214,608	)	15.9	%		(2,005,896	)	20.3	%		(843,861	)	8.2	%
Miscellaneous		18,717		(0.2	% )		72,577	)	(0.70	% %		(184,249		2.0	)
	$	--		0	%	$	--		0	%	$	--		0	%