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SIGNIFICANT ACCOUNTING POLICIES - Investments in Unconsolidated (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
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SIGNIFICANT ACCOUNTING POLICIES |  |
Equity method investment | $ 77,140 | $ 78,234
Investment In Joint Venture Four |  |
SIGNIFICANT ACCOUNTING POLICIES |  |
Percentage of interest in a joint venture | 39.00% |
Investment In Joint Venture Four | Other long-term assets | Water Infrastructure |  |
SIGNIFICANT ACCOUNTING POLICIES |  |
Equity method investment | $ 70,266 | 70,965
Investment In Joint Venture One |  |
SIGNIFICANT ACCOUNTING POLICIES |  |
Percentage of interest in a joint venture | 20.00% |
Investment In Joint Venture One | Other long-term assets | Water Services |  |
SIGNIFICANT ACCOUNTING POLICIES |  |
Equity method investment | $ 4,130 | 4,104
Investment in Joint Venture Two |  |
SIGNIFICANT ACCOUNTING POLICIES |  |
Percentage of interest in a joint venture | 35.00% |
Investment in Joint Venture Two | Other long-term assets | Water Services |  |
SIGNIFICANT ACCOUNTING POLICIES |  |
Equity method investment | $ 0 | 412
Investment In Joint Venture Three |  |
SIGNIFICANT ACCOUNTING POLICIES |  |
Percentage of interest in a joint venture | 47.00% |
Investment In Joint Venture Three | Other long-term assets | Water Infrastructure |  |
SIGNIFICANT ACCOUNTING POLICIES |  |
Equity method investment | $ 2,744 | $ 2,753

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