The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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Contingent Liabilities and Commitments - Additional Informattion (Detail) - Tank Replacement Costs - USD ($) $ in Thousands	3 Months Ended
	Feb. 29, 2020	May 31, 2021	May 31, 2020	Feb. 28, 2019
Loss Contingencies [Line Items]
Best estimated probable costs charge to costs of goods sold				$ 13,000
Reserve for replacement program		$ 4,878	$ 4,964
Freight [Member]
Loss Contingencies [Line Items]
Freight adjustment	$ 2,265