Consolidated Statements of Stockholders' Equity (USD $)	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Balance, November 30	$ 18,294,145	$ 17,071,222	$ 14,730,541
Balance, November 30 (in Shares)	4,046,552	4,035,052
Exercise of stock options	46,390	9,110
Exercise of stock options (in Shares)	9,000	2,000
Stock based compensation	29,812	34,519
Shares issued for purchase of UHC		35,550
Dividends paid, $0.10/$0.10 per share	(404,655)	(403,585)
Net income	1,551,376	2,665,087
Common Stock [Member]
Balance, November 30	40,466	40,351	40,259
Balance, November 30 (in Shares)	4,046,552	4,035,052	4,025,852
Exercise of stock options	90	20
Exercise of stock options (in Shares)	9,000	2,000
Stock based compensation	25	22
Stock based compensation (in Shares)	2,500	2,200
Shares issued for purchase of UHC		50
Shares issued for purchase of UHC (in Shares)		5,000
Additional Paid-in Capital [Member]
Balance, November 30	2,616,407	2,540,320	2,461,233
Exercise of stock options	46,300	9,090
Stock based compensation	29,787	34,497
Shares issued for purchase of UHC		35,500
Retained Earnings [Member]
Balance, November 30	15,637,272	14,490,551	12,229,049
Dividends paid, $0.10/$0.10 per share	(404,655)	(403,585)
Net income	$ 1,551,376	$ 2,665,087