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Segment Information (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 02, 2014	Feb. 03, 2013	Jan. 29, 2012
Segment Reporting Information [Line Items]
Net revenues	$ 215.5	$ 166.6	$ 140.1
Long-term assets	$ 61.4	$ 42.6	$ 24.1

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Amount of long-lived assets located in foreign countries in total in which the entity holds assets.

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Revenues from external customers attributed to all foreign countries in total from which the entity derives revenues.

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