Note 9 - Stockholders' Equity (Details) (USD $)	0 Months Ended			1 Months Ended						8 Months Ended	9 Months Ended	12 Months Ended											1 Months Ended			5 Months Ended	12 Months Ended	1 Months Ended	3 Months Ended	12 Months Ended		1 Months Ended	0 Months Ended	9 Months Ended			0 Months Ended				1 Months Ended			1 Months Ended			0 Months Ended			1 Months Ended		0 Months Ended
	Oct. 28, 2013	May 30, 2013	Aug. 08, 2011	Jun. 03, 2013	Feb. 25, 2013	Feb. 28, 2013	Aug. 31, 2012	Aug. 31, 2011	Jan. 31, 2011	Aug. 31, 2013	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Oct. 27, 2013	Feb. 26, 2013	Dec. 06, 2011	Dec. 31, 2010	Sep. 30, 2009	Jan. 31, 2003	Oct. 28, 2013 Consolidated into Two Shares [Member]	Oct. 28, 2013 Consolidated From Nine Shares [Member]	Jul. 25, 2011 Registered Offering [Member] July 25 2011 Register Direct And Private Placement Offerings [Member]	Jul. 20, 2011 Private Offering [Member] July 25 2011 Register Direct And Private Placement Offerings [Member]	Aug. 31, 2011 Beneficial Conversion Feature Associated with January 2011 Preferred Stock Offering Was Not Recorded At Issuance [Member]	Dec. 31, 2011 Amortization of Beneficial Conversion Feature Associated with January 2011 Preferred Stock Offering Was Not Recorded in 2011 [Member]	Dec. 31, 2011 January 2011 Preferred Stock Offering [Member]	Jun. 17, 2010 Committed Equity Financing Facility [Member]	Jun. 30, 2011 Committed Equity Financing Facility [Member]	Dec. 31, 2011 Committed Equity Financing Facility [Member]	Dec. 31, 2010 Committed Equity Financing Facility [Member]	Jan. 31, 2011 Convertible Preferred Stock [Member] January 2011 Preferred Stock Offering [Member]	Feb. 22, 2013 Series A Convertible Preferred Stock (Member)	Sep. 30, 2013 Series A Convertible Preferred Stock (Member)	Dec. 31, 2013 Redeemable Convertible Preferred Stock [Member]	Jan. 31, 2011 Redeemable Convertible Preferred Stock [Member]	Feb. 26, 2013 Dominick LLC [Member] February 2013 Preferrd Stock Offering [Member]	Jul. 06, 2011 Director [Member] June 2 2011 Private Placement Offering [Member]	Feb. 25, 2013 ATM Agreement [Member]	Feb. 26, 2013 January 2011 Preferred Stock Offering [Member] Aggregate Proceeds Of 10 Million Dollars [Member]	Jan. 31, 2013 January 2011 Preferred Stock Offering [Member]	Feb. 25, 2013 January 2011 Preferred Stock Offering [Member]	Feb. 26, 2013 February 2013 Preferrd Stock Offering [Member] Minimum 4 Dollar Share Price [Member]	Oct. 28, 2013 February 2013 Preferrd Stock Offering [Member]	Jun. 30, 2011 June 2 2011 Private Placement Offering [Member]	Jul. 06, 2011 June 2 2011 Private Placement Offering [Member]	Jul. 06, 2011 July 6 2011 Registered Direct Offering [Member]	Jul. 31, 2011 July 6 2011 Registered Direct Offering [Member]	Jul. 06, 2011 July 6 2011 Private Placement Offering [Member]	Jul. 20, 2011 July 25 2011 Register Direct And Private Placement Offerings [Member]	Jul. 25, 2011 July 25 2011 Register Direct And Private Placement Offerings [Member]	Dec. 06, 2011 December 6 2011 Private Placement Offering [Member]	Dec. 31, 2013 Maximum [Member]
Note 9 - Stockholders' Equity (Details) [Line Items]
Shelf Registration Statement Amount (in Dollars)							$ 75,000,000
Proceed From Exercise Of Warrants And Options (in Dollars)										400,000			10,800,000
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period										30,451			904,144
Preferred Stock, Shares Issued												20,000	5,000																			400,000
Stock Issued During Period, Value, New Issues (in Dollars)		9,800,000										18,217,852																8,888				34,859
Aggregate Offering Price (in Dollars)						25,000,000
Stock Issued During Period, Shares, New Issues		1,392,109			1,195,927																									297,892			15,000.00422	15,000.00422
Common Stock Shares Per Warrant																																							6,800,000										0.3	0.40	0.30
Unit Price (in Dollars per Item)																																						13.0275				25,000,000				12.465	14.25375			19,215	19.159	10.406
Preferred Stock, Redemption Price Per Share (in Dollars per share)																																										$ 10
Preferred Stock Shares Available For Purchase From Issued Warrants																																										0.030
Legal Fees (in Dollars)					50,000
Proceed From Securities Offering (in Dollars)																							12,975,506	5,469,998																	18,000,000						6,637,688					15,000,000
Proceeds from Issuance or Sale of Equity (in Dollars)																																					15,000,000
Convertible Preferred Stock, Shares Reserved for Future Issuance																																								2,682,764
Class of Warrant or Right, Number of Securities Called by Warrants or Rights																																											1,341,382										463,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)													15.17	1,418		5.31		23.58																												12.47	14.085			18.99		10.62
Warrants and Rights Outstanding (in Dollars)												3,268,013,000,000				5,400,000
Dividends Payable, Current (in Dollars)																4,600,000
Conversion of Stock, Shares Converted											2,682,764														5,000
Class of Warrant or Right, Outstanding	3,100,000	1,398,816										3,268,013	1,749,667	2,577,470	13,800,000			224,239
Common Stock, Shares Authorized		75,000,000										75,000,000	75,000,000
Reclassification From Equity to Liability (in Dollars)				9,100,000																																								5,300,000
Stockholders' Equity Note, Stock Split, Conversion Ratio	4.5
Reverse Stock Split, Number of Shares Consolidated																					9
Reverse Stock Split, Number of Shares Consolidated into																						2
Common Stock, Shares, Outstanding	13,604,975											13,737,970	8,289,507		61,226,873
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	900,000											861,905	725,529	691,809	3,900,000			481,699
Proceeds from Issuance of Redeemable Convertible Preferred Stock (in Dollars)									5,100,000			13,616,432		4,324,080
Temporary Equity, Shares Issued																																				5,000
Preferred Stock, Dividend Rate, Percentage												8.00%
Preferred Stock, Par or Stated Value Per Share (in Dollars per share)												$ 0.01	$ 0.01																						$ 1,000
Convertible Preferred Stock, Shares Issued upon Conversion																																			92.5926
Immaterial Prior Period Error (in Dollars)								5,000,000																		5,000,000	5,000,000
Conversion of Stock, Shares Issued			462,960
Common Stock, Shares, Issued												13,737,970	8,437,267						224,239	253,691																										715,247		715,247		284,674	677,263	1,441,442
Warrant Premium (in Dollars per share)																																														$ 0.5625						$ 0.125
Proceeds from Issuance of Private Placement (in Dollars)																																													8,600,000
Common Stock Shares Available For Purchase From Issued Warrants																	720,721																														139,704			113,869	203,179
Proceed From Securities Offering Net (in Dollars)																																															6,000,000			17,000,000
Proceeds from Warrant Exercises (in Dollars)																																															2,000,000			6,000,000		7,700,000
Warrants Issued Expiration Period												7 years																																			5 years			5 years		5 years
Committed Value Of Common Stock Shares For Future Purchase (in Dollars)																												15,000,000
Common Stock Sale Limit																												534,319
Percent Of Outstanding Shares																												20.00%
Percentage Limit Of Ownership By SCBV																												9.90%
Proceeds from Issuance of Common Stock (in Dollars)												15,622,955		48,082,025																3,400,000
Amortizable Expenses Associated With Commited Equity Finanacing Facility (in Dollars)																														274,806	332,000
Professional Fees (in Dollars)																													$ 274,806