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Regulatory Matters (Tables)
 3 Months Ended
Mar. 31, 2025
Regulated Operations [Abstract]  
Schedule of regulatory assets, less regulatory liabilities in the consolidated balance sheets for continuing operations Regulatory assets, less regulatory liabilities, included in the consolidated balance sheets are as follows:
(dollars in thousands)March 31,
2025		December 31,
2024
GSWC
2025 general rate case memorandum account (unbilled revenue)
$4,416 $— 
2022/2023 general rate case memorandum accounts (unbilled revenue)34,494 37,711 
Water revenue adjustment mechanism, net of modified cost balancing account23,421 29,738 
Asset retirement obligations7,660 7,501 
Flowed-through deferred income taxes, net13,909 12,506 
Low income rate assistance balancing accounts9,835 8,834 
Other regulatory assets12,138 11,352 
Excess deferred income taxes(63,610)(63,682)
Pensions and other post-retirement obligations (24,115)(25,179)
Other regulatory liabilities(927)(608)
Total GSWC$17,221 $18,173 
BVES
Derivative instrument memorandum account (Note 5)$13,094 $8,823 
2023/2024 general rate case memorandum accounts (unbilled revenue)10,036 9,777 
Wildfire mitigation and other fire prevention related costs memorandum accounts14,755 14,681 
Other regulatory assets9,890 8,853 
Other regulatory liabilities(5,404)(5,628)
Total BVES$42,371 $36,506 
Total AWR$59,592 $54,679