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Note 3 - Accounts Receivable (Details Textual) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Oct. 31, 2023 USD ($)	Oct. 31, 2022	Oct. 31, 2023 USD ($)	Oct. 31, 2022 USD ($)	Jan. 31, 2023	Oct. 01, 2023 USD ($)	Jul. 31, 2023 USD ($)	Dec. 31, 2015 USD ($)
Increase (Decrease) in Accounts Receivable					$ 5,377	$ 4,345
Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Number of Major Customers			1	0	0	0
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Customer [Member]
Concentration Risk, Percentage			14.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Number of Major Customers					2		1
Accounts Receivable [Member] | Customer Concentration Risk [Member] | One Customer [Member]
Concentration Risk, Percentage							12.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member]
Concentration Risk, Percentage					24.00%
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts Receivable, after Allowance for Credit Loss								$ 2,400		$ 41,900
Increase (Decrease) in Accounts Receivable	$ (400)	$ (900)			$ (39,500)
Accounts Receivable, Allowance for Credit Loss									$ 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Other Noncurrent Assets [Member]
Accounts Receivable, after Allowance for Credit Loss, Noncurrent			$ 1,600		$ 1,600

X

- Definition

Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc.

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

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