Note 8 - Fair Values of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value Inputs, Assets, Quantitative Information [Table Text Block]

Risk free interest rate	0.42%		0.67%
Expected term	2.4		2.61
Expected dividends		0
Volatility of stock price	132.9%		136.2%

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

Compensatory Warrant
Fair value at January 1, 2014	$	36,370
Loss on derivative		6,211
Transfer to additional paid-in capital		(42,581	)
Value at March 31, 2014		-
Warrant issued under PI SPA
Fair value at January 1, 2014		206,707
Loss on derivative		198,737
Other		(16	)
Value at March 31, 2014		405,428
Balance, March 31, 2014	$	405,428