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Note 9 - Preferred Stock and Warrants (Details) (USD $)
 0 Months Ended 12 Months Ended 0 Months Ended 54 Months Ended
Feb. 02, 2016
Jun. 14, 2013
Oct. 02, 2011
Dec. 31, 2013
Dec. 31, 2011
Nov. 18, 2011
Jul. 14, 2011
Preferred Class B [Member]
Jul. 14, 2011
Redeemable Preferred Stock [Member]
Dec. 23, 2009
Preferred Class A [Member]
Dec. 05, 2008
Preferred Class A [Member]
Jan. 31, 2016
Minimum [Member]
Note 9 - Preferred Stock and Warrants (Details) [Line Items]                      
Preferred Stock, Shares Issued (in Shares)             56,600        
Preferred Stock, Liquidation Preference Per Share (in Dollars per share)             $ 1,000        
Proceeds from Issuance of Preferred Stock and Preference Stock (in Dollars)         $ 56,600,000   $ 56,600,000        
Preferred Stock, Dividend Rate, Percentage 9.00%   1.00%               1.00%
Preferred Stock Redemption Price Percentage       100.00%              
Temporary Equity, Shares Outstanding (in Shares)               23,325      
Preferred Stock, Redemption Amount (in Dollars)             23,425,398   15,000,000    
Preferred Stock, Value, Issued (in Dollars)                   $ 38,235,000  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)           423,977          
undefined   10.00%   10.00%              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)           6.76