v3.26.1
Pension Plan - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
May 31, 2026
Feb. 28, 2027
Defined Benefit Plan Disclosure [Line Items]    
Employees covered under noncontributory Pension Plan 12.00%  
Compensation period preceding retirement and termination 5 years  
Period used for calculating Pension Plan liability 25 years  
Unfunded pension liability $ 2.2  
Minimum [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Expected contributions 1.0  
Maximum [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Expected contributions $ 3.0  
Scenario Forecast [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Contribution to avoid a Pension Benefit Guaranty Corporation variable premium   $ 0.0