Note 10 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	2013			2012
Current:
Federal	$	----		$	135,031
State		----			7,782
Total current tax provision		----			142,813
Deferred:
Federal		(1,230,271	)		(150,999	)
State		(166,136	)		(27,308	)
Total deferred tax provision		(1,396,407	)		(178,307	)
Income tax benefit	$	(1,396,407	)	$	(35,494	)

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

	2013			2012
Allowance for doubtful accounts	$	45,148		$	13,618
Inventory capitalization		36,591			15,792
Depreciation and amortization		(385,907	)		(585,231	)
Investment tax credits		600,000			600,000
Research & development tax credits		683,495			435,051
Compensation costs		239,876			235,384
Vacation accrual		274,307			250,046
Capital loss carryforward		1,135,794			268,237
Gross deferred tax asset		2,629,304			1,232,897
Less valuation allowance		(475,000	)		(475,000	)
Net deferred tax asset	$	2,154,304		$	757,897
Net current deferred tax asset		1,443,321			189,153
Net long-term deferred tax asset		710,983			568,744
Net deferred tax asset	$	2,154,304		$	757,897

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

	2013			2012
Expected provision at federal statutory tax rate (34%)	$	(665,288	)	$	136,031
State taxes, net of federal benefit		(109,650	)		(12,887	)
Stock-based compensation expense		(217,648	)		(112,008	)
Domestic production activities deduction		---			(16,298	)
Capital gains/(losses) carryforward		(111,225	)		104,138
Federal research & development credit		(248,444	)		(98,726	)
Other permanent differences		(44,152	)		(35,744	)
Income tax benefit	$	(1,396,407	)	$	(35,494	)