Segments - Information of total assets for company's reportable segments (Details 1) - USD ($) $ in Thousands	Jul. 31, 2016	Jan. 31, 2016	Jul. 31, 2015
Segment Reporting Information [Line Items]
Total Assets	$ 1,259,520	$ 1,184,070	$ 1,189,479
Wholesale
Segment Reporting Information [Line Items]
Total Assets	874,258	763,353	875,347
Retail
Segment Reporting Information [Line Items]
Total Assets	212,296	210,118	223,829
Corporate
Segment Reporting Information [Line Items]
Total Assets	$ 172,966	$ 210,599	$ 90,303