Note 10 - Net Loss Per Share Attributable to Common Stockholders (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Convertible Preferred stock		7,581		4,254		7,581		4,254
Common stock warrants		660		660		660		660
Outstanding stock options		1,134		607		1,134		607
Convertible notes		-		239		-		239
		9,375		5,760		9,375		5,760