Note 11 - Income Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

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

	Three month period ended March 31,
	2014		2013
Common stock options		4,422,573		2,470,217
Unvested stock awards		300,000		—
Common shares issuable upon conversion of Preferred C Stock		3,141,176		—
Warrants		5,490,018		730,554
Total potentially dilutive shares excluded from calculation		13,353,767		3,200,771