Note 8 - Income Taxes (Detail) - The provision for income taxes consists of the following: (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current provision:
Federal	$ 3,054,862	$ 2,155,653	$ 2,121,604
State	415,244	375,336	286,171
	3,470,106	2,530,989	2,407,775
Deferred provision (benefit):
Federal	(107,843)	229,540	(80,991)
State	(12,688)	27,004	(9,529)
	(120,531)	256,544	(90,520)
	$ 3,349,575	$ 2,787,533	$ 2,317,255