Segments - Information of total assets for company's reportable segments (Details 1) - USD ($) $ in Thousands	Oct. 31, 2015	Jan. 31, 2015	Oct. 31, 2014
Segment Reporting Information [Line Items]
Total Assets	$ 1,416,492	$ 1,043,761	$ 1,221,089
Wholesale
Segment Reporting Information [Line Items]
Total Assets	1,062,754	681,522	935,509
Retail
Segment Reporting Information [Line Items]
Total Assets	241,180	182,363	198,579
Corporate
Segment Reporting Information [Line Items]
Total Assets	$ 112,558	$ 179,876	$ 87,001