Segments - Information regarding reportable segments (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2016	Oct. 31, 2015
Segment Reporting Information [Line Items]
Net sales		$ 883,476	$ 909,865	$ 1,783,145	$ 1,816,714
Cost of goods sold		562,024	572,808	1,140,381	1,156,890
Gross profit		321,452	337,057	642,764	659,824
Selling, general and administrative		198,274	191,044	504,547	469,560
Depreciation and amortization		8,033	6,611	22,898	18,213
Operating profit (loss)		115,145	139,402	115,319	172,051
Operating Segments | Wholesale
Segment Reporting Information [Line Items]
Net sales		794,382	807,034	1,538,096	1,550,979
Cost of goods sold		521,359	527,144	1,029,829	1,047,861
Gross profit		273,023	279,890	508,267	503,118
Selling, general and administrative		140,356	133,127	333,906	304,801
Depreciation and amortization		5,169	4,482	15,539	12,470
Operating profit (loss)		127,498	142,281	158,822	185,847
Operating Segments | Retail
Segment Reporting Information [Line Items]
Net sales		107,238	124,669	302,188	338,695
Cost of goods sold		58,809	67,502	167,691	181,989
Gross profit		48,429	57,167	134,497	156,706
Selling, general and administrative		57,918	57,917	170,641	164,759
Depreciation and amortization		2,864	2,129	7,359	5,743
Operating profit (loss)		(12,353)	(2,879)	(43,503)	(13,796)
Elimination
Segment Reporting Information [Line Items]
Net sales	[1]	(18,144)	(21,838)	(57,139)	(72,960)
Cost of goods sold	[1]	$ (18,144)	$ (21,838)	$ (57,139)	$ (72,960)

[1] Represents intersegment sales to the Company's retail operations.