Note 2 - Investment Securities (Details) - Sales of Securities (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Sales of Securities [Abstract]
Proceeds from sales of securities	$ 39,876,889	$ 31,225,516	$ 65,754,467	$ 37,393,047
Pre-tax gross gains from sales of securities	357,934	506,611	379,130	523,071
Pre-tax gross losses from sales of securities	$ (338,505)	$ (89,675)	$ (338,505)	$ (89,675)