Note 11 - Warrants (Details) - Summary of Warrant Activity (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Oct. 28, 2013	Oct. 27, 2013	May 30, 2013	Feb. 26, 2013	Dec. 31, 2010
Note 11 - Warrants (Details) - Summary of Warrant Activity [Line Items]
Warrants Outstanding- Number of Warrants Issued	3,268,013	1,749,667	2,577,470	3,100,000	13,800,000	1,398,816		224,239
Warrants Outstanding- Weighted Average Exercise Price (in Dollars per Item)		15.17	1,418.0000				5.31	23.58
Warrant Issued	1,341,382		2,394,398
Warrant Issued (in Dollars per share)	$ 5.31
Warrants exercised for common stock warrants -Number of Warrants Issued	(15,833)	(847,715)
Warrants exercised for common stock warrants -Weighted Average Exercise Price (in Dollars per share)	$ 14.63	$ 12.11
(in Dollars)	$ 3,268,013.0						$ 5.4
(in Dollars per share)	$ 10.43
Aggregate intrinsic value of outstanding warrants at December 31, 2013 (in Dollars per share)	$ 58,496
Weighted average remaining contractual terms (years)	3 years 204 days
Warrant [Member]
Note 11 - Warrants (Details) - Summary of Warrant Activity [Line Items]
Warrants exercised for common stock warrants -Number of Warrants Issued			(34,859)
Warrants exercised for common stock warrants -Weighted Average Exercise Price (in Dollars per share)			$ 12.29
Oxford and Horizon Credit Agreement [Member]
Note 11 - Warrants (Details) - Summary of Warrant Activity [Line Items]
Warrant Issued			11,415
Warrant Issued (in Dollars per share)			$ 13.14
Hercules Credit Agreement [Member]
Note 11 - Warrants (Details) - Summary of Warrant Activity [Line Items]
Warrant Issued	194,986
Warrant Issued (in Dollars per share)	$ 3.59
Issued In Connection With 2011 Equity Transactions [Member]
Note 11 - Warrants (Details) - Summary of Warrant Activity [Line Items]
Warrant Issued			2,394,398
Warrant Issued (in Dollars per share)			$ 13.28