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Marketable Securities - Available-for-sale by Maturity Date (Details) $ in Thousands	Aug. 03, 2019 USD ($)
Schedule of Available-for-sale Securities
Less than 12 months	$ 8,398
Greater than 12 months	3,480
Total	11,878
Certificates of deposit
Schedule of Available-for-sale Securities
Less than 12 months	2,234
Greater than 12 months	1,230
Total	3,464
U.S. Government securities
Schedule of Available-for-sale Securities
Less than 12 months	1,000
Greater than 12 months	0
Total	1,000
U.S. Government sponsored entities
Schedule of Available-for-sale Securities
Less than 12 months	3,661
Greater than 12 months	2,250
Total	5,911
Municipal bonds
Schedule of Available-for-sale Securities
Less than 12 months	1,503
Greater than 12 months	0
Total	$ 1,503

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth 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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