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Long-Term Debt - Interest Rates (Details)
$ in Thousands
 12 Months Ended
Feb. 28, 2023
USD ($)
quarter
Feb. 28, 2022
USD ($)
Feb. 28, 2021
USD ($)
Credit agreement      
Revolving Line of Credit      
Average borrowings outstanding $ 1,011,263 $ 503,900 $ 334,400
Average interest rates during each year (as a percent) 4.30% 1.10% 1.70%
Weighted average interest rates on borrowings outstanding at year end (as a percent) 6.60% 1.20% 1.10%
Number of prior quarters used in calculation of average borrowings outstanding | quarter 4    
Credit agreement | Minimum      
Revolving Line of Credit      
Interest rate range during each year (as a percent) 1.10% 1.10% 1.10%
Credit agreement | Maximum      
Revolving Line of Credit      
Interest rate range during each year (as a percent) 8.60% 3.30% 4.80%
MBFC loan      
Revolving Line of Credit      
Average borrowings outstanding $ 12,226 $ 17,087 $ 18,987
Average interest rates during each year (as a percent) 5.00% 1.10% 1.40%
Weighted average interest rates on borrowings outstanding at year end (as a percent)   1.20% 1.10%
MBFC loan | Minimum      
Revolving Line of Credit      
Interest rate range during each year (as a percent) 1.20% 1.10% 1.10%
MBFC loan | Maximum      
Revolving Line of Credit      
Interest rate range during each year (as a percent) 5.90% 1.20% 2.60%