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Note 2 - Reportable Segments (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

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

		Three Months Ended March 31, 2024
(in thousands)		Land and Water Resources				Water Filtration Technology				Total
Revenues		$	636			$	485			$	1,121
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	)

		Three Months Ended March 31, 2023
(in thousands)		Land and Water Resources				Water Filtration Technology				Total
Revenues		$	130			$	-			$	130
Total revenues			130				-				130
Costs and expenses:
Cost of sales			22				-				22
General and administrative			3,767				164				3,931
Depreciation			278				51				329
Total costs and expenses			4,067				215				4,282
Operating loss		$	(3,937	)		$	(215	)		$	(4,152	)

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

		March 31, 2024				December 31, 2023
Operating Segment:
Water and Land Resources		$	119,013			$	101,946
Water Filtration Technology			6,494				5,428
		$	125,507			$	107,374

Schedule of Goodwill [Table Text Block]

		March 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]

		March 31, 2024
		Water and Land Resources				Water Filtration Technology
Land and land improvements		$	32,357			$	-
Water programs			29,242				-
Pipeline			22,097				-
Buildings			1,730				-
Leasehold improvements, furniture and fixtures			1,606				4
Machinery and equipment			3,737				210
Construction in progress			5,731				-
			96,500				214
Less accumulated depreciation			(9,520	)			(149	)
		$	86,980			$	65

		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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