Note 12 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

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

	December 31, 2015			December 31, 2014
Deferred tax assets:
Net operating loss carryforward	$	28,475,616		$	23,246,809
Stock-based compensation		4,240,612			4,121,311
Total deferred tax assets		32,716,228			27,368,120
Deferred tax liabilities:
Fixed assets		(348,869	)		(673,241	)
Less: valuation allowance		(32,367,359	)		(26,694,879	)
	$	--		$	--

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

	December 31, 2015					December 31, 2014					December 31, 2013
Federal statutory rate	$	(3,457,068	)	35.0	%	$	(3,610,711	)	35.0	%	$	(4,572,234	)	35.0	%
State income taxes – Idaho		(7,652	)	0.1	%		(11,016	)	0.1	%		(14,264	)	0.1	%
State income taxes - Utah		(243,973	)	2.5	%		(239,093	)	2.3	%		(199,166	)	1.5	%
State and local income taxes - NY		(30,468	)	0.3	%		(46,372	)	0.4	%		(58,721	)	0.5	%
Change in valuation allowance related to derivatives		5,672,480		(57.5%	)		4,935,302		(47.8%	)		5,034,877		(39.0%	)
Net nontaxable income related to derivatives		(2,005,896	)	20.3	%		(843,861	)	8.2	%		(290,623	)	2.2	%
Miscellaneous		72,577		(0.70%	)		(184,249	)	2.0	%		100,131		(0.3%	)
	$	--		0	%	$	--		0	%	$	--		0	%