Note 16 - Stock Based Compensation (Details) - Stock Option Activity - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock Option Activity [Abstract]
Outstanding, beginning of year (in Shares)	1,494,399	1,215,530	964,530
Outstanding, beginning of year	$ 3.59	$ 3.66	$ 4.38
Outstanding, end of year (in Shares)	1,946,225	1,494,399	1,215,530
Outstanding, end of year	$ 3.59	$ 3.66	$ 4.38	$ 3.56	$ 3.59	$ 3.66
Options exercisable at year-end (in Shares)				772,949	454,761	306,217
Options exercisable at year-end	4.18	5.06	6.24
Weighted average fair value of options granted during the year	$ 1.89	$ 2.07	$ 1.51
Granted (in Shares)	505,200	360,900	347,250
Granted	$ 3.55	$ 3.69	$ 2.72
Exercised (in Shares)	(21,500)	(500)
Exercised	$ 3.01	$ 1.95
Forfeited (in Shares)	(31,874)	(81,531)	(96,250)
Forfeited	$ 5.13	$ 5.15	$ 7.39