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SIGNIFICANT ACCOUNTING POLICIES - Investments in Unconsolidated (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
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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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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