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Fair Value (Details) - Recurring - Fair Values - Significant other observable market inputs (Level 2) - USD ($)
$ in Thousands
Nov. 30, 2018
Feb. 28, 2018
Assets:    
Total assets $ 7,256 $ 4,230
Liabilities:    
Total liabilities 339,794 292,475
Interest rate swap    
Assets:    
Derivative assets 2,553 2,481
Foreign currency contracts    
Assets:    
Derivative assets 4,057 642
Liabilities:    
Foreign currency contracts 64 2,606
Floating rate debt    
Liabilities:    
Floating rate debt 339,730 289,869
Money market accounts    
Assets:    
Money market accounts $ 646 $ 1,107