Note 12 - Income (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

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

	Year Ended December 31,
	2013		2012
Common stock options		3,192,849		63,272
Restricted stock units (unvested)		—		10,125
Shares issuable upon conversion of preferred stock		—		406,563
Shares issuable upon conversion of convertible debt		—		—
Warrants		2,005,684		627,895
Total shares excluded from calculation		5,198,533		1,107,855