Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Open Tax Years and Ongoing Tax Examinations in Major Jurisdictions (Detail)

v2.4.0.8
Income Taxes - Summary of Open Tax Years and Ongoing Tax Examinations in Major Jurisdictions (Detail)
 12 Months Ended
Nov. 30, 2013
United States - Federal Income Tax [Member]
  
Income Tax Contingency [Line Items]  
Examinations in Process N/A
United States - Federal Income Tax [Member] | Initial Examination Period [Member]
  
Income Tax Contingency [Line Items]  
Open Tax Years 2009
United States - Federal Income Tax [Member] | Expiration Examination Period [Member]
  
Income Tax Contingency [Line Items]  
Open Tax Years 2012
United States - Various States [Member]
  
Income Tax Contingency [Line Items]  
Examinations in Process N/A
United States - Various States [Member] | Initial Examination Period [Member]
  
Income Tax Contingency [Line Items]  
Open Tax Years 2008
United States - Various States [Member] | Expiration Examination Period [Member]
  
Income Tax Contingency [Line Items]  
Open Tax Years 2012