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Income Taxes (Tables)
3 Months Ended
Apr. 30, 2015
Income Tax Disclosure [Abstract]  
Provision for Income Taxes
The provision for income taxes was comprised of the following:
 
Three months ended April 30,
 
2015
 
2014
Income tax benefit
$
(1,512
)
 
$
(174
)
Effective tax rate
12.6
%
 
5.4
%