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Financial Instruments and Risk Management – Cash and Cash Equivalents (Details) - USD ($)
$ in Thousands
12 Months Ended
Feb. 28, 2017
Feb. 29, 2016
Feb. 28, 2015
Feb. 28, 2014
Risks Inherent in Cash and Cash Equivalents        
Cash, interest and non-interest-bearing accounts - unrestricted $ 20,376 $ 13,836    
Money market funds 2,711 211,964    
Total cash and cash equivalents $ 23,087 $ 225,800 $ 12,295 $ 70,027
Minimum | Cash        
Risks Inherent in Cash and Cash Equivalents        
Interest rate (as a percent) 0.00% 0.00%    
Minimum | Money market accounts        
Risks Inherent in Cash and Cash Equivalents        
Interest rate (as a percent) 0.18% 0.11%    
Maximum | Cash        
Risks Inherent in Cash and Cash Equivalents        
Interest rate (as a percent) 0.35% 0.50%    
Maximum | Money market accounts        
Risks Inherent in Cash and Cash Equivalents        
Interest rate (as a percent) 0.19% 0.19%    
Hydro Flask        
Risks Inherent in Cash and Cash Equivalents        
Money market funds   $ 210,000