Note 15 - Stock Based Compensation (Details) - Roll-forward of Non-vested Options (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Roll-forward of Non-vested Options [Abstract]
Nonvested, beginning of year	909,313	710,600
Nonvested, beginning of year	$ 1.37
Nonvested, end of year	1,039,638	909,313	710,600
Nonvested, end of year	$ 1.49	$ 1.37
Granted	360,900	347,250	296,750
Granted	$ 2.07	$ 1.51	$ 1.05
Vested	(209,825)	(127,287)	(146,000)
Vested	$ 1.65
Forfeited	(20,750)
Forfeited	$ 1.51