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Supplemental Balance Sheet Information (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 3 Months Ended 3 Months Ended
May 31, 2014
Feb. 28, 2014
May 31, 2014
Land
Feb. 28, 2014
Land
May 31, 2014
Building and improvements
Feb. 28, 2014
Building and improvements
May 31, 2014
Building and improvements
Minimum
May 31, 2014
Building and improvements
Maximum
May 31, 2014
Computer, furniture and other equipment
Feb. 28, 2014
Computer, furniture and other equipment
May 31, 2014
Computer, furniture and other equipment
Minimum
May 31, 2014
Computer, furniture and other equipment
Maximum
May 31, 2014
Tools, molds and other production equipment
Feb. 28, 2014
Tools, molds and other production equipment
May 31, 2014
Tools, molds and other production equipment
Minimum
May 31, 2014
Tools, molds and other production equipment
Maximum
May 31, 2014
Construction in progress
Feb. 28, 2014
Construction in progress
PROPERTY AND EQUIPMENT                                    
Estimated useful life             3 years 40 years     3 years 15 years     1 year 10 years    
Property and equipment, gross $ 202,316 $ 200,633 $ 12,800 $ 12,800 $ 98,818 $ 98,660     $ 62,174 $ 60,291     $ 23,022 $ 23,017     $ 5,502 $ 5,865
Less accumulated depreciation (74,730) (71,516)                                
Property and equipment, net $ 127,586 $ 129,117