Pension Plan - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	May 31, 2025	Feb. 28, 2026	Feb. 28, 2025
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
Contribution to avoid a Pension Benefit Guaranty Corporation variable premium			$ 1.2
Unfunded pension liability	$ 1.4
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