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Supplemental Balance Sheet Information (Details) - USD ($)
$ in Thousands
3 Months Ended
May. 31, 2015
Feb. 28, 2015
PROPERTY AND EQUIPMENT    
Property and equipment, gross $ 209,494 $ 208,222
Less accumulated depreciation (84,165) (82,154)
Property and equipment, net 125,329 126,068
Land    
PROPERTY AND EQUIPMENT    
Property and equipment, gross 12,800 12,800
Building and improvements    
PROPERTY AND EQUIPMENT    
Property and equipment, gross $ 102,058 102,058
Building and improvements | Minimum    
PROPERTY AND EQUIPMENT    
Estimated useful life 3 years  
Building and improvements | Maximum    
PROPERTY AND EQUIPMENT    
Estimated useful life 40 years  
Computer, furniture and other equipment    
PROPERTY AND EQUIPMENT    
Property and equipment, gross $ 63,837 64,464
Computer, furniture and other equipment | Minimum    
PROPERTY AND EQUIPMENT    
Estimated useful life 3 years  
Computer, furniture and other equipment | Maximum    
PROPERTY AND EQUIPMENT    
Estimated useful life 15 years  
Tools, dies, molds and other production equipment    
PROPERTY AND EQUIPMENT    
Property and equipment, gross $ 26,004 25,861
Tools, dies, molds and other production equipment | Minimum    
PROPERTY AND EQUIPMENT    
Estimated useful life 1 year  
Tools, dies, molds and other production equipment | Maximum    
PROPERTY AND EQUIPMENT    
Estimated useful life 10 years  
Construction in progress    
PROPERTY AND EQUIPMENT    
Property and equipment, gross $ 4,795 $ 3,039