Fair Value Measurement - Amortized Cost and Fair Market Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	May 04, 2019	Feb. 02, 2019
Amortized Cost
Mature in one year or less	$ 43,135	$ 50,350
Mature after one year through five years	7,777	8,883
Total	50,912	59,233
Fair Market Value
Mature in one year or less	43,123	50,317
Mature after one year through five years	7,776	8,867
Fair Market Value	50,899	$ 59,184
Changes among the fair value levels
Changes between Level 1 to Level 2, Assets	$ 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 investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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