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Note 11 - Revenue (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Disaggregation of Revenue [Table Text Block]

		Three Months Ended September 30,								Nine Months Ended September 30,
		2022				2021				2022				2021
Over time (Engineered Steel Pressure Pipe)		$	83,663			$	69,439			$	235,446			$	188,244
Point in time (Precast Infrastructure and Engineered Systems)			39,321				15,204				115,391				42,522
Net sales		$	122,984			$	84,643			$	350,837			$	230,766

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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Period Type:	duration