Fair Value Measurement (Details 2) (USD $) In Thousands, unless otherwise specified	Aug. 03, 2013	Feb. 02, 2013
Amortized Cost
Mature in one year or less	$ 15,847	$ 12,771
Mature after one year through five years	8,353	5,754
Total	24,200	18,525
Fair Market Value
Mature in one year or less	15,870	12,819
Mature after one year through five years	8,346	5,760
Total Fair Market Value	24,216	18,579
Changes among the fair value levels
Changes between Level 1 to Level 2, Assets	0
Changes between Level 2 to Level 1, Assets	0
Changes between Level 1 to Level 2, Liabilities	0
Changes between Level 2 to Level 1, Liabilities	$ 0

Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of assets measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Amount of transfers of liabilities measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2.

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Amount of transfers of liabilities measured on a recurring basis out of Level 2 of the fair value hierarchy into Level 1.

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Amount of held-to-maturity debt securities at fair value maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year.

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Carrying amount of debt securities accounted for as held-to-maturity, net of adjustments including, but not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized, and fair value hedge accounting adjustments, maturing in the next fiscal year through the fifth fiscal year following the latest fiscal year.

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Amount of held-to-maturity debt securities at fair value maturing in the next fiscal year following the latest fiscal year.

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This item represents the aggregate fair value of investments in debt securities as of the balance sheet date and which are categorized as held-to-maturity.

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