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Note 9 - Revenue, Deferred Revenue and Accounts Receivable (Details Textual) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Aug. 31, 2024	Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2024	Aug. 31, 2023	Nov. 30, 2023	Nov. 30, 2022
Standard Product Warranty, Term (Year)		1 year
Extended Product Warranty, Term (Year)	3 years	3 years
Accounts Receivable, after Allowance for Credit Loss, Current	$ 2,128	$ 2,128		$ 2,128		$ 2,945	$ 5,900
Accounts Receivable, Allowance for Credit Loss	300	300		300		500	20
Contract with Customer, Liability	$ 800	800	$ 800	800	$ 800	$ 1,900	$ 800
Contract with Customer, Liability, Revenue Recognized		$ 100	$ 400	$ 200	$ 500

X

- Definition

Represents the term associated with the extended product warranty.

+ References

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- Definition

Represents the term associated with the standard product warranty.

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- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
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X

- Definition

Amount of allowance for credit loss on accounts receivable.

+ References

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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-Topic 606
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