Note 4 - Equity, Stock Plan and Warrants (Details) - Schedule of Stock Option Activity (USD $)	6 Months Ended
	Jun. 30, 2013
Note 4 - Equity, Stock Plan and Warrants (Details) - Schedule of Stock Option Activity [Line Items]
Exercised	381,718
Options [Member]
Note 4 - Equity, Stock Plan and Warrants (Details) - Schedule of Stock Option Activity [Line Items]
Outstanding at December 31, 2012	2,254,514
Granted	245,000
Forfeited or expired	(1,667)
Exercised	(381,718)
Outstanding at June 30, 2013	2,116,129
Vested and exercisable at June 30, 2013	1,388,536
Weighted Exercise Price [Member]
Note 4 - Equity, Stock Plan and Warrants (Details) - Schedule of Stock Option Activity [Line Items]
Outstanding at December 31, 2012 (in Dollars per share)	$ 7.08
Granted (in Dollars per share)	$ 32.06
Forfeited or expired (in Dollars per share)	$ 7.80
Exercised (in Dollars per share)	$ 6.98
Outstanding at June 30, 2013 (in Dollars per share)	$ 9.99
Vested and exercisable at June 30, 2013 (in Dollars per share)	$ 7.20