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Long-Term Debt - Summary of long term debt (Details) - USD ($)
$ in Thousands
3 Months Ended
May 31, 2020
Feb. 29, 2020
Debt Instrument [Line Items]    
Total long-term debt $ 324,883 $ 339,305
Less current maturities of long-term debt (1,884) (1,884)
Long-term debt, excluding current maturities 322,999 337,421
MBFC loan    
Debt Instrument [Line Items]    
Total long-term debt 18,540 20,451
Remaining principal balance due on March 1, 2021 1,900  
Remaining principal balance due on March 1, 2022 1,900  
Remaining principal balance due on March 1, 2023 $ 14,800  
MBFC loan | LIBOR    
Debt Instrument [Line Items]    
Interest rate 2.00%  
MBFC loan | Base rate    
Debt Instrument [Line Items]    
Interest rate 1.00%  
Credit agreement    
Debt Instrument [Line Items]    
Total long-term debt $ 306,343 $ 318,854
Amount of interest rate swap hedge $ 225,000