Note 13 - Discontinued Operations (Detail) - Sales, earnings before income tax, and provision for income taxes of the discontinued operation for each year were as follows: (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Earnings before income taxes			$ 877
Current provision (benefit):
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)
Federal [Member] | Roberts, Cushman and Company Inc. [Member]
Current provision (benefit):
Federal		(1,394)	701
Deferred provision (benefit):
Federal			617
State [Member] | Roberts, Cushman and Company Inc. [Member]
Current provision (benefit):
State		26	(2,261)
Deferred provision (benefit):
State			54
Roberts, Cushman and Company Inc. [Member]
Sales			(419)
Current provision (benefit):
		(1,368)	(1,560)
Deferred provision (benefit):
			671
		$ (1,368)	$ (889)