Fair Value Measurements (Tables)

12 Months Ended

Jan. 31, 2015

Fair Value Hierarchy for Financial Assets (Cash Equivalents and Investments) Measured at Fair Value on Recurring Basis

In accordance with ASC 820, the following tables represent the fair value hierarchy for the Company’s financial assets (cash equivalents and investments) measured at fair value on a recurring basis as of January 31, 2015 and February 1, 2014:

	Fair Value Measurements at January 31, 2015
(In thousands)	Carrying Amount		Quoted Market Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents
Cash	$	370,692	$	370,692	$	—	$	—
Money-market		40,005		40,005		—		—
Total cash and cash equivalents	$	410,697	$	410,697	$	—	$	—
Total short-term investments		—		—		—		—
Total	$	410,697	$	410,697	$	—	$	—

	Fair Value Measurements at February 1, 2014
(In thousands)	Carrying Amount		Quoted Market Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash and cash equivalents
Cash	$	330,013	$	330,013	$	—	$	—
Treasury bills		63,224		63,224		—		—
Money-market		25,696		25,696		—		—
Total cash and cash equivalents	$	418,933	$	418,933	$	—	$	—
Short-term investments
Treasury bills	$	10,002	$	10,002	$	—	$	—
Total short-term investments	$	10,002	$	10,002	$	—	$	—
Total	$	428,935	$	428,935	$	—	$	—