Note 8 - Common Stock (Tables)

12 Months Ended

Dec. 31, 2013

Stockholders' Equity Note [Abstract]

Schedule of Common Stock Reserved for Future Issuance [Table Text Block]

Conversion of Series A convertible preferred stock	291,132,255
Conversion of Series B convertible preferred stock	171,199,348
Exercise of options under stock plan	45,146,118
Issuance of options under stock plan	36,449,336
Exercise and conversion of convertible preferred stock warrants	24,299,963
	568,227,020