SEGMENT INFORMATION - Total Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
SEGMENT INFORMATION
Total assets	$ 1,706,875	$ 1,595,612
Operating segment \| Water Infrastructure
SEGMENT INFORMATION
Total assets	966,228	929,789
Operating segment \| Water Services
SEGMENT INFORMATION
Total assets	457,989	435,761
Operating segment \| Chemical Technologies
SEGMENT INFORMATION
Total assets	148,444	148,773
Operating segment \| Other
SEGMENT INFORMATION
Total assets	$ 134,214	$ 81,289

Amount of asset recognized for present right to economic benefit.

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+ Details