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Note 3 - Reportable Segments - Assets by Operating Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Assets	$ 134,494	$ 107,374
Water and Land Resources [Member]
Assets	123,786	101,946
Water Filtration Technology [Member]
Assets	$ 10,708	$ 5,428

X

- Definition

Amount of asset recognized for present right to economic benefit.

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