Segments - Information of total assets for company's reportable segments (Detail) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2014	Jan. 31, 2014	Jul. 31, 2013
Segment Reporting Information [Line Items]
Total Assets	$ 1,079,167	$ 830,897	$ 857,360
Licensed
Segment Reporting Information [Line Items]
Total Assets	529,004		463,736
Non-Licensed
Segment Reporting Information [Line Items]
Total Assets	293,224		247,991
Retail
Segment Reporting Information [Line Items]
Total Assets	169,268		79,344
Corporate
Segment Reporting Information [Line Items]
Total Assets	$ 87,671		$ 66,289