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Note 2 - Reportable Segments (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

		Three Months Ended March 31, 2025
(in thousands)		Land and Water Resources				Water Filtration Technology				Total
Revenues			565				2,389				2,954
Costs and expenses:
Cost of sales			499				1,579				2,078
General and administrative			7,397				710				8,107
Depreciation			295				7				302
Total costs and expenses			8,191				2,296				10,487
Operating (loss) income		$	(7,626	)		$	93			$	(7,533	)

		Three Months Ended March 31, 2024
(in thousands)		Land and Water Resources				Water Filtration Technology				Total
Revenues			636				485				1,121
Costs and expenses:
Cost of sales			660				344				1,004
General and administrative			4,480				250				4,730
Depreciation			282				13				295
Total costs and expenses			5,422				607				6,029
Operating loss		$	(4,786	)		$	(122	)		$	(4,908	)

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

		March 31, 2025				December 31, 2024
Operating Segment:
Water and Land Resources		$	134,635			$	123,786
Water Filtration Technology			10,941				10,708
		$	145,576			$	134,494

Schedule of Goodwill [Table Text Block]

		March 31, 2025				December 31, 2024
Operating Segment:
Water and Land Resources		$	3,813			$	3,813
Water Filtration Technology			1,901				1,901
		$	5,714			$	5,714

Property, Plant and Equipment [Table Text Block]

		March 31, 2025
		Water and Land Resources				Water Filtration Technology				Total
Land and land improvements		$	33,069			$	-		$	33,069
Water programs			30,955				-			30,955
Pipeline			22,102				-			22,102
Buildings			1,805				-			1,805
Leasehold improvements, furniture and fixtures			1,605				8			1,613
Machinery and equipment			3,907				247			4,154
Construction in progress			9,277				6			9,283
			102,720				261			102,981
Less accumulated depreciation			(10,691	)			(185	)		(10,876	)
		$	92,029			$	76		$	92,105

		December 31, 2024
		Water and Land Resources				Water Filtration Technology				Total
Land and land improvements		$	33,069			$	-		$	33,069
Water programs			29,383				-			29,383
Pipeline			22,100				-			22,100
Buildings			1,805				-			1,805
Leasehold improvements, furniture and fixtures			1,605				4			1,609
Machinery and equipment			3,870				247			4,117
Construction in progress			6,851				6			6,857
			98,683				257			98,940
Less accumulated depreciation			(10,397	)			(181	)		(10,578	)
		$	88,286			$	76		$	88,362

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