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Note 4 - Revenue Recognition (Tables)

12 Months Ended

Jan. 31, 2025

Notes Tables

Disaggregation of Revenue [Table Text Block]

		2024								2023
		Sales				% to Total				Sales				% to Total
Products		$	12,801				8	%		$	10,368				7	%
Specialty Piping Systems and Coating
Revenue recognized under input method			45,606				29	%			51,977				34	%
Revenue recognized under output method			99,977				63	%			88,323				59	%
Total		$	158,384				100	%		$	150,668				100	%

Schedule of Assumptions for Long-Duration Contracts by Product and Guarantee [Table Text Block]

		2024				2023
Costs incurred on uncompleted contracts		$	11,621			$	21,912
Estimated earnings			9,366				11,270
Earned revenue			20,987				33,182
Less billings to date			19,302				30,580
Costs in excess of billings, net		$	1,685			$	2,602
Balance sheet classification
Contract assets: Costs and estimated earnings in excess of billings on uncompleted contracts		$	2,934			$	3,097
Contract liabilities: Billings in excess of costs and estimated earnings on uncompleted contracts			(1,249	)			(495	)
Costs in excess of billings, net		$	1,685			$	2,602

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