Note 11 - Stockholders' Equity (Details) (USD $)	0 Months Ended		1 Months Ended		6 Months Ended	12 Months Ended					0 Months Ended	12 Months Ended						1 Months Ended	0 Months Ended
	Jan. 15, 2014	May 30, 2013	Feb. 25, 2013	Feb. 28, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 09, 2014	Oct. 29, 2013	Oct. 28, 2013	Feb. 26, 2013	Feb. 22, 2013 Series A Convertible Preferred Stock (Member)	Dec. 31, 2013 Series A Convertible Preferred Stock (Member)	Jan. 15, 2014 Series A Warrant [Member]	Jan. 15, 2014 Series B Warrant [Member]	Feb. 26, 2013 Aggregate Proceeds Of 10 Million Dollars [Member] January 2011 Preferred Stock Offering [Member]	Feb. 26, 2013 Minimum 4 Dollar Share Price [Member] February 2013 Preferrd Stock Offering [Member]	Feb. 25, 2013 ATM Agreement [Member]	Feb. 25, 2013 January 2011 Preferred Stock Offering [Member]	Feb. 26, 2013 February 2013 Preferrd Stock Offering [Member] Dominick LLC [Member]	Feb. 26, 2013 February 2013 Preferrd Stock Offering [Member]
Note 11 - Stockholders' Equity (Details) [Line Items]
Stock Issued During Period, Shares, New Issues	3,603,604	1,392,109	1,195,927								15,000.00422	15,000.00422
Common Stock, Par or Stated Value Per Share (in Dollars per share)	$ 0.01				$ 0.01	$ 0.01
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	1,801,802															1,341,382
Stock Issued During Period, Value, New Issues (in Dollars)	$ 15,000,000	$ 9,800,000
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right													0.25	0.25
Share Price (in Dollars per share)	$ 4.1625
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share)	$ 4.10				$ 8.18	$ 10.43				$ 5.31
Aggregate Offering Price (in Dollars)				25,000,000
Common Stock Shares Per Warrant																	6,800,000
Unit Price (in Dollars per Item)																		25,000,000
Commission on Proceeds from ATM Shares, Percent																		3.00%
Legal Fees (in Dollars)			50,000
Proceeds from Issuance or Sale of Equity (in Dollars)																			15,000,000
Convertible Preferred Stock, Shares Reserved for Future Issuance															2,682,764
Warrants Issued Expiration Period					7 years															5 years
Warrants and Rights Outstanding (in Dollars)					476,261	3,026	97,493			5,400,000
Dividends Payable, Current (in Dollars)										$ 4,600,000
Conversion of Stock, Shares Converted						2,682,764
Reverse Stock Split, Number of Shares Outstanding Consolidated into Each Share								4.5	4.5