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Fair Value Measurements - (Details) - USD ($) $ in Thousands		12 Months Ended
	Feb. 23, 2021	Apr. 30, 2021	Jan. 29, 2022	Oct. 30, 2021
Fair Value Measurement
Available for sale securities		$ 36,959		$ 6,311
Intelligent Systems Group
Fair Value Measurement
Contingently returnable consideration		479
Contingent consideration		(5,521)
Contingent consideration paid	$ 6,000	6,000
Fair value of contingent consideration		5,521
Released from escrow			$ 2,000
Recurring basis
Fair Value Measurement
Available for sale securities		36,959		6,311
Contingently returnable consideration		479		289
Total		37,438		6,600
Contingent consideration				(889)
Total				889
Fair value of contingent consideration				889
Recurring basis | Significant other observable inputs (Level 2)
Fair Value Measurement
Available for sale securities		36,959		6,311
Total		36,959		6,311
Recurring basis | Significant unobservable inputs (Level 3)
Fair Value Measurement
Contingently returnable consideration		479		289
Total		$ 479		289
Contingent consideration				(889)
Total				889
Fair value of contingent consideration				$ 889

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Fair value of contingent consideration assets in a business combination.

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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