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Note 4 - Revenue Recognition (Tables)

12 Months Ended

Jan. 31, 2023

Notes Tables

Disaggregation of Revenue [Table Text Block]

		2022								2021
		Sales				% to Total				Sales				% to Total
Products		$	14,626				10	%		$	13,575				10	%
Specialty Piping Systems and Coating
Revenue recognized under input method			44,648				31	%			44,778				32	%
Revenue recognized under output method			83,295				59	%			80,199				58	%
Total		$	142,569				100	%		$	138,552				100	%

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

(In thousands)		2022				2021
Costs incurred on uncompleted contracts		$	18,342			$	20,021
Estimated earnings			9,370				12,030
Earned revenue			27,712				32,051
Less billings to date			26,329				31,019
Costs in excess of billings, net		$	1,383			$	1,032
Balance sheet classification
Contract assets: Costs and estimated earnings in excess of billings on uncompleted contracts		$	3,126			$	2,309
Contract liabilities: Billings in excess of costs and estimated earnings on uncompleted contracts			(1,743	)			(1,277	)
Costs in excess of billings, net		$	1,383			$	1,032

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Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

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