Note 13 - Shareholders Equity (Details) - Original Warrants Exercise Price	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Class of Warrant or Right [Line Items]
Exercise price	0.44		0.76	1.43	1.42
2012 Private Placement [Member]
Class of Warrant or Right [Line Items]
Original exercise price	0.54
Exercise price	0.43		0.54
2009 Strategic Alliance [Member]
Class of Warrant or Right [Line Items]
Original exercise price	0.65
Exercise price	0.40		0.49
2008 Private Placement [Member]
Class of Warrant or Right [Line Items]
Original exercise price	3.08
Exercise price		[1]	1.97

[1] The warrants issued in the 2008 Private Placement expired in March 2013.