Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Nov. 30, 2024	Aug. 31, 2024	May 31, 2024	Nov. 30, 2023	Aug. 31, 2023	May 31, 2023	Nov. 30, 2024	Nov. 30, 2023
Schedule of Accumulated Other Comprehensive Loss [Line Items]
Beginning balance			$ 59,279				$ 59,279
Other comprehensive loss before reclassifications							(13,796)
Amounts reclassified from accumulated other comprehensive income							(30,656)
Other comprehensive income (loss), net of taxes	$ 5,770	$ (52,621)	2,399	$ (17,930)	$ 17,267	$ (36,539)	(44,452)	$ (37,202)
Ending balance	14,827						14,827
Net Unrecognized Actuarial Losses
Schedule of Accumulated Other Comprehensive Loss [Line Items]
Beginning balance			(37,116)				(37,116)
Other comprehensive loss before reclassifications							0
Amounts reclassified from accumulated other comprehensive income							253
Other comprehensive income (loss), net of taxes							253
Ending balance	(36,863)						(36,863)
Net Unrecognized Hedge Gains (Losses)
Schedule of Accumulated Other Comprehensive Loss [Line Items]
Beginning balance			$ 96,395				96,395
Other comprehensive loss before reclassifications							(13,796)
Amounts reclassified from accumulated other comprehensive income							(30,909)
Other comprehensive income (loss), net of taxes							(44,705)
Ending balance	$ 51,690						$ 51,690