v3.26.1
Note 2 - Reportable Segments - Segment Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Revenues $ 979 $ 4,126 $ 2,611 $ 7,080
Cost of sales 1,003 2,665 2,210 4,743
General and administrative 8,424 6,935 15,301 15,042
Depreciation 387 303 770 605
Total costs and expenses 9,814 9,903 18,281 20,390
Operating (loss) income (8,835) (5,777) (15,670) (13,310)
Water and Land Resources [Member]        
Revenues 219 431 577 996
Cost of sales 423 614 705 1,113
General and administrative 7,380 5,750 13,124 13,147
Depreciation 372 294 744 589
Total costs and expenses 8,175 6,658 14,573 14,849
Operating (loss) income (7,956) (6,227) (13,996) (13,853)
Water Treatment [Member]        
Revenues 760 3,695 2,034 6,084
Cost of sales 580 2,051 1,505 3,630
General and administrative 1,044 1,185 2,177 1,895
Depreciation 15 9 26 16
Total costs and expenses 1,639 3,245 3,708 5,541
Operating (loss) income $ (879) $ 450 $ (1,674) $ 543