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Long-Term Debt - FV, Limit, Interest Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Feb. 28, 2018
Feb. 28, 2017
Feb. 29, 2016
INTEREST EXPENSE      
Interest and commitment fees $ 13,084 $ 13,745 $ 9,941
Deferred finance costs 887 706 651
Interest rate swap settlements, net 54   (11)
Cross-currency debt swap (74) (90)  
Total interest expense $ 13,951 $ 14,361 $ 10,581