Note 10 - Stockholders' Equity (Details) - Stock Option Activity (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2014		Dec. 31, 2013
Note 10 - Stockholders' Equity (Details) - Stock Option Activity [Line Items]
Options Exercised	(1,667)		(122,685)
2012 Omnibus Incentive Plan [Member]
Note 10 - Stockholders' Equity (Details) - Stock Option Activity [Line Items]
Options Outstanding	1,280,042
Options Outstanding, Weighted- Average Exercise Price	$ 1.99
Options Granted	838,000
Options Granted, Weighted-Average Exercise Price	$ 2.69
Options Exercised	(1,667)
Options Exercised, Weighted-Average Exercise Price	$ 1.93
Options Forfeited or Expired	(85,709)
Options Forfeited or Expired, Weighted-Average Exercise Price	$ 2.45
Options Outstanding	2,030,666
Options Outstanding, Weighted- Average Exercise Price	$ 2.26
Options Outstanding, Weighted Average Remaining Contractual Life	9 years 36 days
Options Outstanding, Aggregate Intrinsic Value	$ 219,048
Options Exercisable	671,876
Options Exercisable, Weighted-Average Exercise Price	$ 2.03
Options Exercisable, Weighted Average Remaining Contractual Life	8 years 219 days
Options Exercisable, Aggregate Intrinsic Value	131,017
2006 Stock Incentive Plan [Member]
Note 10 - Stockholders' Equity (Details) - Stock Option Activity [Line Items]
Options Outstanding	7,415,051
Options Outstanding, Weighted- Average Exercise Price	$ 2.36
Options Forfeited or Expired	(86,196)
Options Forfeited or Expired, Weighted-Average Exercise Price	$ 3.92
Options Outstanding	7,328,855
Options Outstanding, Weighted- Average Exercise Price	$ 2.34
Options Outstanding, Weighted Average Remaining Contractual Life	4 years 292 days
Options Outstanding, Aggregate Intrinsic Value	4,025,914
Options Exercisable	6,705,733	[1]
Options Exercisable, Weighted-Average Exercise Price	$ 2.19	[1]
Options Exercisable, Weighted Average Remaining Contractual Life	4 years 219 days	[1]
Options Exercisable, Aggregate Intrinsic Value	4,025,914	[1]
Non-Plan Option Activity [Member]
Note 10 - Stockholders' Equity (Details) - Stock Option Activity [Line Items]
Options Outstanding	443,038
Options Outstanding, Weighted- Average Exercise Price	$ 1.34
Options Outstanding	443,038
Options Outstanding, Weighted- Average Exercise Price	$ 1.34
Options Outstanding, Weighted Average Remaining Contractual Life	5 years 36 days
Options Outstanding, Aggregate Intrinsic Value	279,114
Options Exercisable	443,038
Options Exercisable, Weighted-Average Exercise Price	$ 1.34
Options Exercisable, Weighted Average Remaining Contractual Life	5 years 36 days
Options Exercisable, Aggregate Intrinsic Value	$ 279,114

[1] Includes 71,352 exercisable options to purchase common stock at a weighted average exercise price of $3.64 per share being held by consultants.