Note 2 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2013

Accounting Policies [Abstract]

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

	June 30,
	2013		2012
Convertible preferred stock		12		95
Stock options		428		423
Warrants		636		12
Unvested shares of restricted common stock		3,614		16
		4,690		546