Note 9 - Preferred Stock and Common Stock Warrants (Details) (USD $)	1 Months Ended	0 Months Ended
	Jan. 30, 2009	Apr. 03, 2014	Apr. 15, 2013	Jun. 13, 2012	Jan. 30, 2009	May 08, 2013
Note 9 - Preferred Stock and Common Stock Warrants (Details) [Line Items]
Warrant Term	10 years
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	459,459				459,459
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share)	$ 5.55				5.55
Stock and Warrants Issued During Period, Value, Preferred Stock and Warrants (in Dollars)	$ 17,000,000
Preferred Stock, Liquidation Preference Per Share (in Dollars per share)	$ 1,000				1,000
Warrants and Rights Outstanding (in Dollars)						2,003,250
Series A Preferred Stock [Member]
Note 9 - Preferred Stock and Common Stock Warrants (Details) [Line Items]
Stock Issued During Period, Shares, New Issues	17,000
Preferred Stock, Dividend Rate, Percentage		9.00%
Stock Redeemed or Called During Period, Shares		12,000	12,000	5,000
Preferred Stock, Redemption Amount (in Dollars)				5,000,000
Preferred Stock, Amount of Preferred Dividends in Arrears (in Dollars)				19,444
Preferred Stock, Shares Outstanding				12,000
Stock Redeemed or Called During Period, Value (in Dollars)		$ 12,000,000
Preferred Stock, Dividends Per Share, Declared (in Dollars per share)		$ 19.50
First Five Years [Member]
Note 9 - Preferred Stock and Common Stock Warrants (Details) [Line Items]
Preferred Stock, Dividend Rate, Percentage					5.00%
After Five Years [Member]
Note 9 - Preferred Stock and Common Stock Warrants (Details) [Line Items]
Preferred Stock, Dividend Rate, Percentage					9.00%