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Segments - Information of total assets for company's reportable segments (Detail) (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2014
Jan. 31, 2014
Oct. 31, 2013
Segment Reporting Information [Line Items]      
Total Assets $ 1,224,401 $ 830,897 $ 1,004,600
Licensed
      
Segment Reporting Information [Line Items]      
Total Assets 610,570   503,838
Non-Licensed
      
Segment Reporting Information [Line Items]      
Total Assets 324,939   335,390
Retail
      
Segment Reporting Information [Line Items]      
Total Assets 198,579   101,902
Corporate
      
Segment Reporting Information [Line Items]      
Total Assets $ 90,313   $ 63,470