Note 3 - Redeemable Series C Preferred Stock and Shareholders' Equity (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Series C Preferred Stock [Member]
Preferred Stock, Redemption Price Per Share	$ 16.09
Series B Preferred Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion	3
Convertible Preferred Stock Conversion Price	$ 0.33
Preferred Stock, Liquidation Preference Per Share	$ 1
Preferred Stock, Liquidation Preference, Value	$ 1,102,433	$ 1,102,433
Convertible Preferred Stock [Member]
Preferred Stock, Redemption Price Per Share	$ 1
Convertible Preferred Stock Conversion Price	1
Preferred Stock, Liquidation Preference Per Share	$ 1
Preferred Stock, Liquidation Preference, Value	$ 255,000	255,000
Series D Preferred Stock [Member]
Preferred Stock, Redemption Price Per Share	$ 1
Preferred Stock, Dividend Rate, Per-Dollar-Amount	$ 0.10
Preferred Stock, Amount of Preferred Dividends in Arrears	$ 828,000
Preferred Stock, Liquidation Preference, Value	$ 1,518,000	$ 1,518,000