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Fair Value (Details) - Recurring - Fair Values - Significant Other Observable Market Inputs (Level 2) - USD ($)
$ in Thousands
Aug. 31, 2018
Feb. 28, 2018
Assets:    
Total assets $ 8,511 $ 4,230
Liabilities:    
Total liabilities 301,303 292,475
Interest rate swap    
Assets:    
Derivative assets 2,557 2,481
Foreign currency contracts    
Assets:    
Derivative assets 3,376 642
Liabilities:    
Foreign currency contracts 227 2,606
Floating rate debt    
Liabilities:    
Floating rate debt 301,076 289,869
Money market accounts    
Assets:    
Money market accounts $ 2,578 $ 1,107