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Description of Business and Summary of Significant Accounting Policies Sales Incentives (Tables)
 12 Months Ended
Feb. 28, 2019
Sales Incentives [Abstract]  
Schedule of Accrued Sales Incentives [Table Text Block]
 
Year
Ended
 
Year
Ended
 
Year
Ended
 
February 28,
2019
 
February 28,
2018
 
February 28,
2017
Opening balance
$
14,020

 
$
13,154

 
$
12,439

Accruals
37,272

 
42,722

 
36,413

Payments and credits
(37,516
)
 
(41,811
)
 
(35,590
)
Reversals for unearned sales incentives
(202
)
 
(45
)
 
(108
)
Ending balance
$
13,574

 
$
14,020

 
$
13,154