Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v2.4.0.8
Income Taxes - Additional Information (Detail)
0 Months Ended 3 Months Ended
Oct. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Income Taxes [Line Items]      
Effective tax rate   41.50%  
Tax-sharing agreement [Member]
     
Income Taxes [Line Items]      
Effective tax rate 43.50%   43.50%
Tax-sharing agreement termination date   Oct. 31, 2013