Note 14 - Summary of Warrant Activity (Details)	3 Months Ended
	Mar. 31, 2016 $ / shares shares
Warrants outstanding (in shares) | shares	5,894,675
Warrants outstanding (in dollars per share) | $ / shares	$ 6.37
Warrants outstanding at March 31, 2016 (in shares) | shares	5,894,675
Warrants outstanding (in dollars per share) | $ / shares	$ 6.37
Weighted average remaining contractual terms at March 31, 2016 (years)	2 years 219 days