Note 10 - Acquisitions (Detail) - Unaudited pro forma information (USD $)	3 Months Ended
Feb. 28, 2013	Feb. 29, 2012
Net Sales from Continuing Operations:
As Reported (in Dollars)	$ 8,415,104	$ 6,312,216
Pro Forma (in Dollars)	8,415,104	7,216,848
Net Income from Continuing Operations:
As Reported (in Dollars)	819,254	193,498
Pro Forma (in Dollars)	$ 819,254	$ 222,848
Basic Net income per Share:
As Reported	$ 0.20	$ 0.05
Pro Forma	$ 0.20	$ 0.06
Diluted Net income per Share:
As Reported	$ 0.20	$ 0.05
Pro Forma	$ 0.20	$ 0.06
Weighted average outstanding shares used to compute basic net income per share (in Shares)	4,035,052	4,028,193
Weighted average outstanding shares used to compute diluted net income per share (in Shares)	4,047,134	4,046,125

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