Note 1 - Nature of Operations and Basis of Presentation (Detail) - Stock option transactions (USD $)	9 Months Ended
	Nov. 30, 2012	Nov. 30, 2011
Outstanding stock options as of February 28 or 29:	307,088	341,890
Outstanding stock options as of November 30:	289,136	344,520
Weighted average exercise price (in Dollars per share)	$ 10.67	$ 10.11
Weighted average remaining contractual term (in years)	2 years 25 days	2 years 262 days
Granted		12,936
Exercised	(3,000)	(8,731)
Cancelled/forfeited	(14,952)	(1,575)