XML 65 R55.htm IDEA: XBRL DOCUMENT v3.22.2
Pension Plan - Additional Information (Detail) - USD ($)
3 Months Ended
Feb. 28, 2023
May 31, 2022
May 31, 2021
Feb. 28, 2022
Defined Benefit Plan Disclosure [Line Items]        
Employees covered under noncontributory Pension Plan   13.00%    
Compensation period preceding retirement and termination   5 years    
Period used for calculating Pension Plan liability   25 years    
Unfunded pension liability   $ 5,729,000   $ 5,729,000
Pension settlement charge   (0) $ (0)  
Minimum [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Expected contributions   1,500,000    
Maximum [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Expected contributions   $ 3,000,000.0    
Scenario Forecast [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Minimum required contribution to the plan $ 0