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Note 3 - Reportable Segments (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

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

		Twelve Months Ended December 31, 2024
(in thousands)		Land and Water Resources				Water Filtration Technology				Total
Revenues		$	1,708			$	7,900			$	9,608
Costs and expenses:
Cost of sales			2,984				4,314				7,298
General and administrative			22,525				1,820				24,345
Depreciation			1,159				55				1,214
Total costs and expenses			26,668				6,189				32,857
Operating income (loss)		$	(24,960	)		$	1,711			$	(23,249	)

		Twelve Months Ended December 31, 2023
(in thousands)		Land and Water Resources				Water Filtration Technology				Total
Revenues		$	1,251			$	740			$	1,991
Costs and expenses:
Cost of sales			2,241				646				2,887
General and administrative			18,042				755				18,797
Depreciation			1,096				151				1,247
Total costs and expenses			21,379				1,552				22,931
Operating income (loss)		$	(20,128	)		$	(812	)		$	(20,940	)

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

		December 31, 2024				December 31, 2023
Operating Segment:
Water and Land Resources		$	123,786			$	101,946
Water Filtration Technology			10,708				5,428
		$	134,494			$	107,374

Schedule of Goodwill [Table Text Block]

		December 31, 2024				December 31, 2023
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]

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

		December 31, 2023
		Water and Land Resources				Water Filtration Technology
Land and land improvements		$	32,357			$	-
Water programs			29,209				-
Pipeline			22,096				-
Buildings			1,730				-
Leasehold improvements, furniture and fixtures			1,605				4
Machinery and equipment			3,719				210
Construction in progress			5,664				-
			96,380				214
Less accumulated depreciation			(9,238	)			(139	)
		$	87,142			$	75

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