Note 10 - Acquisitions (Details) - Unaudited pro forma information (USD $)	3 Months Ended		6 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2013	May 31, 2012
Net Sales from Continuing Operations:
As Reported (in Dollars)	$ 9,250,308	$ 11,685,169	$ 17,665,413	$ 17,997,383
Pro Forma (in Dollars)	9,250,308	12,965,205	17,665,413	20,182,051
Net Income from Continuing Operations:
As Reported (in Dollars)	514,240	935,981	1,333,500	1,129,479
Pro Forma (in Dollars)	$ 514,240	$ 1,388,142	$ 1,333,500	$ 1,610,990
Basic Net income per Share:
As Reported	$ 0.13	$ 0.23	$ 0.33	$ 0.28
Pro Forma	$ 0.13	$ 0.34	$ 0.33	$ 0.40
Diluted Net income per Share:
As Reported	$ 0.13	$ 0.23	$ 0.33	$ 0.28
Pro Forma	$ 0.13	$ 0.34	$ 0.33	$ 0.40
Weighted average outstanding shares used to compute basic net income per share (in Shares)	4,037,552	4,031,439	4,036,302	4,029,825
Weighted average outstanding shares used to compute diluted net income per share (in Shares)	4,051,692	4,047,787	4,049,480	4,047,346