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Income Taxes - Additional Information (Detail) (USD $)
12 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Feb. 29, 2012
Income Tax [Line Items]      
Effective tax rate on earnings from operations 58.50% 36.00% 36.50%
Refund receivable related to amended Canadian tax returns $ 2,800,000    
Tax benefit recognized 50.00%    
Unrecognized tax benefits, including accrued interest and penalties 246,000 96,000  
Unrecognized tax benefit includes an aggregate of interest expense 17,000    
Reductions due to lapses of statutes of limitations 32,000 30,000  
Unrecognized tax benefits expiring 12 months    
Unrecognized interest or penalties other than tax benefits 0 0 0
Internal Revenue Service (IRS) [Member]
     
Income Tax [Line Items]      
Operating Loss Carryforwards $ 443,000    
Internal Revenue Service (IRS) [Member] | Minimum [Member]
     
Income Tax [Line Items]      
Net operating loss carry forwards expiring 2014    
Internal Revenue Service (IRS) [Member] | Maximum [Member]
     
Income Tax [Line Items]      
Net operating loss carry forwards expiring 2017