Note 10 - Acquisitions (Detail) - Schedule of Pro Forma Information (USD $)	3 Months Ended		9 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2012	Aug. 31, 2011
As Reported (in Dollars)	$ 11,533,882	$ 9,252,063	$ 29,531,268	$ 21,761,551
Pro Forma (in Dollars)	11,533,882	10,496,635	31,785,360	25,043,715
As Reported (in Dollars)	979,451	1,019,840	2,108,929	826,002
Pro Forma (in Dollars)	$ 979,451	$ 1,075,354	$ 2,623,389	$ 960,796
As Reported	$ 0.24	$ 0.25	$ 0.52	$ 0.21
Pro Forma	$ 0.24	$ 0.27	$ 0.65	$ 0.24
As Reported	$ 0.24	$ 0.25	$ 0.52	$ 0.20
Pro Forma	$ 0.24	$ 0.27	$ 0.65	$ 0.22
Basic (in Shares)	4,035,852	4,019,874	4,031,828	4,016,039
Diluted (in Shares)	4,052,246	4,042,135	4,049,236	4,049,706