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Income Taxes (Tables)
3 Months Ended
Apr. 30, 2014
Income Tax Disclosure [Abstract]  
Provision for Income Taxes
The provision for income taxes was comprised of the following:

 
Three months ended April 30,
 
2014
 
2013
Income tax expense (benefit)
$
(174
)
 
$
568

Effective tax rate
5.4
%
 
381
%