Segments - Information regarding reportable segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Segment Reporting Information [Line Items]
Net sales	$ 643,892	$ 624,698	$ 1,277,444	$ 1,236,441
Cost of goods sold	412,123	393,154	809,611	770,370
Gross profit	231,769	231,544	467,833	466,071
Selling, general and administrative expenses	196,448	198,860	398,307	400,931
Depreciation and amortization	9,789	9,455	19,262	18,835
Gain on lease terminations	(1,393)		(2,222)
Operating profit (loss)	26,925	23,229	52,486	46,305
Operating Segments | Wholesale operations
Segment Reporting Information [Line Items]
Net sales	588,601	544,597	1,159,240	1,072,270
Cost of goods sold	395,728	362,756	767,308	704,331
Gross profit	192,873	181,841	391,932	367,939
Selling, general and administrative expenses	141,540	136,178	288,797	272,591
Depreciation and amortization	7,763	7,348	15,284	14,483
Operating profit (loss)	43,570	38,315	87,851	80,865
Operating Segments | Retail
Segment Reporting Information [Line Items]
Net sales	83,706	106,662	165,610	211,181
Cost of goods sold	44,810	56,959	89,709	113,049
Gross profit	38,896	49,703	75,901	98,132
Selling, general and administrative expenses	54,908	62,682	109,510	128,340
Depreciation and amortization	2,026	2,107	3,978	4,352
Gain on lease terminations	(1,393)		(2,222)
Operating profit (loss)	(16,645)	(15,086)	(35,365)	(34,560)
Elimination
Segment Reporting Information [Line Items]
Net sales	(28,415)	(26,561)	(47,406)	(47,010)
Cost of goods sold	$ (28,415)	$ (26,561)	$ (47,406)	$ (47,010)