Note 16 - Stock Based Compensation (Details) - Roll-forward of Non-vested Options - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Roll-forward of Non-vested Options [Abstract]
Nonvested, beginning of year	1,039,638	909,313
Nonvested, beginning of year	$ 1.49
Granted	505,200	360,900	347,250
Granted	$ 1.89	$ 2.07	$ 1.51
Vested	(349,062)
Vested	$ 1.68
Forfeited	(22,500)
Forfeited	$ 1.80
Nonvested, end of year	1,173,276	1,039,638	909,313
Nonvested, end of year	$ 1.63	$ 1.49