Note 10 - Employee Benefit Plans (Details) - Net Periodic Benefit Cost (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net Periodic Benefit Cost [Abstract]
Service cost				$ 322,916
Interest cost	167,180	247,561	501,540	783,205
Expected return on plan assets	(298,146)	(328,621)	(894,438)	(954,151)
Recognized actuarial net loss	193,161	171,359	579,485	690,197
Net periodic benefit cost	$ 62,195	$ 90,299	$ 186,587	$ 842,167