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Long-Term Notes (Details)
$ / shares in Units, shares in Thousands
 3 Months Ended 9 Months Ended
Nov. 30, 2025
USD ($)
$ / shares
Nov. 30, 2024
USD ($)
Nov. 30, 2025
USD ($)
$ / shares
shares
Nov. 30, 2024
USD ($)
Feb. 28, 2025
USD ($)
Debt Instrument [Line Items]          
Long-Term Debt $ 196,200,000   $ 196,200,000   $ 195,300,000
Redemption period, end date     Feb. 15, 2029    
Par value of convertible debentures     $ 1,000    
Interest expense, debt 1,500,000 $ 1,500,000 4,500,000 $ 4,500,000  
Long-Term Debt, Fair Value 284,400,000   284,400,000   289,500,000
Senior Convertible Notes          
Debt Instrument [Line Items]          
Face amount of debt 200,000,000   200,000,000    
Amortization of Debt Issuance Costs     900,000    
Long-Term Debt $ 196,200,000   $ 196,200,000   $ 195,300,000
Interest rate 3.00%   3.00%    
Debt Instrument, Convertible, Number of Equity Instruments - with decimals     257.5826    
Conversion of stock (in shares) | shares     52,000    
Conversion price (in dollars per share) | $ / shares $ 3.88   $ 3.88    
Date of first interest payment     Aug. 15, 2024    
Debt Instrument, Interest Rate Terms     The Notes bear interest at a rate of 3.00% per annum, payable semi-annually in arrears on February 15 and August 15 of each year, beginning on August 15, 2024    
Payments of Debt Issuance Costs     $ 6,000,000