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Description of Business and Summary of Significant Accounting Policies Sales Incentives (Tables)
 12 Months Ended
Feb. 28, 2017
Sales Incentives [Abstract]  
Schedule of Accrued Sales Incentives [Table Text Block]
 
Year
Ended
 
Year
Ended
 
Year
Ended
 
February 28,
2017
 
February 29,
2016
 
February 28,
2015
Opening balance
$
12,439

 
$
14,097

 
$
17,401

Accruals
36,413

 
28,428

 
34,159

Payments and credits
(35,590
)
 
(30,009
)
 
(37,352
)
Reversals for unearned sales incentives
(108
)
 
(77
)
 
(103
)
Reversals for unclaimed sales incentives
—

 
—

 
(8
)
Ending balance
$
13,154

 
$
12,439

 
$
14,097