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Long-Term Debt - FV, Limit, Interest Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Feb. 28, 2017
Feb. 29, 2016
Feb. 28, 2015
INTEREST EXPENSE      
Interest and commitment fees $ 13,747 $ 9,949 $ 11,958
Deferred finance costs 1,200 1,158 1,846
Interest rate swap settlements, net     1,218
Cross-currency debt swap (90) (11)  
Total interest expense 14,857 $ 11,096 $ 15,022
Fixed rate debt | Discounted cash flow analysis      
Long-term debt      
Long-term debt $ 20,100