Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	May 31, 2023	Feb. 28, 2023
Accounts receivable, allowance for doubtful accounts	$ 5,751	$ 5,752
Common stock, par value (usd per share)	$ 1	$ 1
Common stock, shares authorized (shares)	100,000,000	100,000,000
Common stock, shares, issued (shares)	25,013,000	24,912,000
Common stock, shares, outstanding (shares)	25,013,000	24,912,000
Series A Preferred Stock
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	240,000	240,000
Preferred stock, shares issued (in shares)	240,000	240,000
Preferred stock, shares outstanding (in shares)	240,000	240,000