Stock Option Plan and Stock Based Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
	Nov. 30, 2012	Feb. 29, 2012
Stock option Activity
Number of Shares, Options Outstanding, Beginning Balance	310,193
Weighted Average Exercise Price, beginning price	$ 15.60
Weighted Average Remaining Contractual Life, beginning	6 years 7 months 6 days	6 years 7 months 6 days
Aggregate Intrinsic Value, beginning	$ 626
Number of Shares, Granted	72,707
Weighted Average Exercise Price, granted	$ 15.48
Number of Shares, Terminated	(2,500)
Weighted Average Exercise Price, Terminated	$ 13.28
Number of Shares, Exercised	(4,000)
Weighted Average Exercise Price, Exercised	$ 8.94
Number of Shares, Options Outstanding, Ending Balance	376,400	310,193
Weighted Average Exercise Price, ending price	$ 15.66	$ 15.60
Weighted Average Remaining Contractual Life, ending	6 years 7 months 6 days	6 years 7 months 6 days
Aggregate Intrinsic Value, ending	439	626
Number of Shares, Exercisable	205,196
Weighted Average Exercise Price, Exercisable	$ 15.66
Weighted Average Remaining Contractual Life, Exercisable	5 years
Aggregate Intrinsic Value, Exercisable	$ 298