Condensed consolidated Balance Sheets (Parenthetical) (USD $)	Nov. 30, 2012	Feb. 29, 2012
Statement of Financial Position [Abstract]
Accounts Receivable, Allowance for Doubtful Accounts	$ 1,200,000	$ 898,000
Common Stock, Par Value (usd per share)	$ 1	$ 1
Common Stock, Shares Authorized (shares)	50,000,000	50,000,000
Common Stock, Shares Issued (shares)	25,376,967	25,218,320
Common Stock Held In Treasury (shares)	0	53,090