Segments - Information regarding reportable segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jul. 31, 2013		Jul. 31, 2012		Jul. 31, 2013		Jul. 31, 2012
Segment Reporting Information [Line Items]
Net sales	$ 304,158		$ 251,479		$ 576,773		$ 480,928
Cost of goods sold	204,739		176,636		384,961		337,395
Gross profit	99,419		74,843		191,812		143,533
Selling, general and administrative	89,044		69,454		174,872		136,068
Depreciation and amortization	3,242		2,100		6,363		4,153
Operating profit (loss)	7,133		3,289		10,577		3,312
Operating Segments | Licensed
Segment Reporting Information [Line Items]
Net sales	202,454		178,419		382,961		335,373
Cost of goods sold	147,689		131,712		277,991		248,375
Gross profit	54,765		46,707		104,970		86,998
Selling, general and administrative	48,495		42,405		94,752		81,918
Depreciation and amortization	575		502		1,060		1,003
Operating profit (loss)	5,695		3,800		9,158		4,077
Operating Segments | Non-licensed
Segment Reporting Information [Line Items]
Net sales	70,400		48,265		131,089		95,602
Cost of goods sold	45,887		35,918		87,382		71,601
Gross profit	24,513		12,347		43,707		24,001
Selling, general and administrative	19,964		9,579		39,262		19,676
Depreciation and amortization	1,875		994		3,814		1,977
Operating profit (loss)	2,674		1,774		631		2,348
Operating Segments | Retail
Segment Reporting Information [Line Items]
Net sales	41,097		32,914		86,347		69,050
Cost of goods sold	20,950		17,125		43,160		36,516
Gross profit	20,147		15,789		43,187		32,534
Selling, general and administrative	20,621		17,470		40,956		34,474
Depreciation and amortization	792		604		1,489		1,173
Operating profit (loss)	(1,266)		(2,285)		742		(3,113)
Elimination
Segment Reporting Information [Line Items]
Net sales	(9,793)	[1]	(8,119)	[1]	(23,624)	[1]	(19,097)	[1]
Cost of goods sold	(9,787)	[1]	(8,119)	[1]	(23,572)	[1]	(19,097)	[1]
Gross profit	(6)	[1]		[1]	(52)	[1]		[1]
Selling, general and administrative	(36)	[1]		[1]	(98)	[1]		[1]
Depreciation and amortization		[1]		[1]		[1]		[1]
Operating profit (loss)	$ 30	[1]		[1]	$ 46	[1]		[1]

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