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Fair Value (Details) - Recurring - Fair Values - Significant Other Observable Market Inputs (Level 2) - USD ($)
$ in Thousands
May 31, 2018
Feb. 28, 2018
Assets:    
Total assets $ 6,924 $ 4,230
Liabilities:    
Total liabilities 300,484 292,475
Interest rate swap    
Assets:    
Derivative assets 2,420 2,481
Foreign currency contracts    
Assets:    
Derivative assets 2,709 642
Liabilities:    
Derivative liabilities 361 2,606
Floating rate debt    
Liabilities:    
Long-term debt 300,123 289,869
Money market accounts    
Assets:    
Cash and cash equivalents $ 1,795 $ 1,107