Note 9 - Convertible Notes Payable (Detail) (USD $)	12 Months Ended															12 Months Ended			1 Months Ended	9 Months Ended	39 Months Ended	1 Months Ended	12 Months Ended	36 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 01, 2011	Nov. 23, 2011	Oct. 31, 2011	Oct. 28, 2011	Oct. 05, 2011	Feb. 22, 2013 Extended Maturity [Member] Convertible Note Payable 4 [Member]	Mar. 30, 2011 Extended Maturity [Member] Convertible Note Payable 4 [Member]	Feb. 22, 2013 Extended Maturity [Member] Convertible Note Payable 5 [Member]	Sep. 30, 2011 Extended Maturity [Member] Convertible Note Payable 5 [Member]	Feb. 22, 2013 Director [Member] Convertible Note Payable 4 [Member]	Mar. 30, 2011 Director [Member] Convertible Note Payable 4 [Member]	Sep. 30, 2011 Director [Member] Convertible Note Payable 5 [Member]	Feb. 22, 2013 CEO and Director Cornelis F. Wit [Member] Convertible Note Payable 5 [Member]	Dec. 31, 2012 Convertible Note Payable 1 [Member]	Dec. 31, 1999 Convertible Note Payable 1 [Member]	Jun. 30, 2004 Convertible Note Payable 1 [Member]	Mar. 30, 2011 Convertible Note Payable 4 [Member]	Sep. 30, 2009 Convertible Note Payable 4 [Member]	Dec. 31, 2012 Convertible Note Payable 4 [Member]	Feb. 22, 2013 Convertible Note Payable 5 [Member]	Dec. 31, 2009 Convertible Note Payable 5 [Member]	Dec. 31, 2012 Convertible Note Payable 5 [Member]
Debt Instrument, Interest Rate, Stated Percentage		12.00%	12.00%	12.00%	12.00%	12.00%	12.00%										10.00%			12.00%			12.00%
Convertible Notes Payable	$ 9,665,000							$ 1,200,000	$ 1,200,000	$ 1,490,000	$ 1,490,000	$ 1,100,000	$ 1,100,000	$ 1,440,000	$ 1,440,000		$ 862,500			$ 1,400,000			$ 1,490,000
Debt Issuance Cost																	119,625
Proceeds from Issuance of Debt																	742,875						1,490,000
Debt Instrument, Convertible, Conversion Price (in Dollars per share)																		$ 1.25		$ 0.25			$ 0.25
Debt Conversion, Converted Instrument, Amount																787,500
Debt Conversion, Converted Instrument, Shares Issued (in Shares)																1,495,179
Long-term Debt, Gross																75,000
Interest Payable		767,000														102,248
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)		6,400,000																		5,600,000			5,960,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)		0.25																		0.25			0.25
Proceeds from Issuance of Secured Debt																				1,400,000
Repayments of Notes Payable	$ 131,800	$ 212,500																	$ 200,000
Investment Warrants, Exercise Price (in Dollars per share)																					$ 0.25	$ 0.25		$ 0.25