SEGMENTS - Information Regarding Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2015		Jan. 31, 2014		Jan. 31, 2013
Segment Reporting Information [Line Items]
Net sales	$ 514,323	$ 812,330	$ 424,010	$ 366,192	$ 472,756	$ 668,702	$ 304,158	$ 272,615	$ 2,116,855		$ 1,718,231		$ 1,399,719
Cost of goods sold									1,359,596		1,133,222		948,392
Gross profit	183,490	295,252	148,384	130,133	166,187	226,945	99,423	92,453	757,259		585,009		451,327
Selling, general and administrative									571,990		440,506		341,242
Depreciation and amortization									20,374		13,676		9,907
Operating profit									164,895		130,827		100,178
Operating Segments | Licensed
Segment Reporting Information [Line Items]
Net sales									1,293,254		1,145,182		981,845
Cost of goods sold									922,535		820,162		702,361
Gross profit									370,719		325,020		279,484
Selling, general and administrative									251,117		228,306		202,247
Depreciation and amortization									4,832		2,433		2,164
Operating profit									114,770		94,281		75,073
Operating Segments | Non-licensed
Segment Reporting Information [Line Items]
Net sales									452,640		342,672		281,916
Cost of goods sold									297,954		230,186		203,853
Gross profit									154,686		112,486		78,063
Selling, general and administrative									98,418		84,885		57,840
Depreciation and amortization									8,622		7,581		5,060
Operating profit									47,646		20,020		15,163
Operating Segments | Retail
Segment Reporting Information [Line Items]
Net sales									499,284		298,008		196,150
Cost of goods sold									267,430		150,505		102,370
Gross profit									231,854		147,503		93,780
Selling, general and administrative									222,455		127,315		81,155
Depreciation and amortization									6,920		3,662		2,683
Operating profit									2,479		16,526		9,942
Elimination
Segment Reporting Information [Line Items]
Net sales									(128,323)	[1]	(67,631)	[1]	(60,192)	[1]
Cost of goods sold									$ (128,323)	[1]	$ (67,631)	[1]	$ (60,192)	[1]

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