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Note 3 - Retention (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Apr. 29, 2025	Jan. 31, 2025	Jan. 31, 2024	Dec. 31, 2015
Increase (Decrease) in Accounts Receivable		$ (2,465)	$ 4,859
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Accounts Receivable, after Allowance for Credit Loss		1,800		$ 41,900
Increase (Decrease) in Accounts Receivable		40,100
Retention Receivable, Settlement Amount		400	600
Accounts Receivable, Allowance for Credit Loss		0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Subsequent Event [Member]
Retention Receivable, Settlement Amount	$ 600
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Other Noncurrent Assets [Member]
Accounts Receivable, after Allowance for Credit Loss, Noncurrent		1,200
Retention Receivable [Member]
Receivables, Long-Term Contracts or Programs		3,300	2,400
Receivables, Long-Term Contracts or Programs, Noncurrent		$ 2,600	$ 1,700

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+ References

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