XML 74 R53.htm IDEA: XBRL DOCUMENT v3.25.0.1
Regulatory Matters - Regulatory Assets, Net (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Regulatory assets:    
Total regulatory assets $ 242,227 $ 240,186
Less: current regulatory asset 18,172 4,276
Regulatory assets, less current portion 224,055 235,910
Regulatory liabilities:    
Regulatory Liabilities 484,841 464,167
Less: current regulatory liabilities 1,122 3,059
Total regulatory liabilities, less current portion $ 483,719 461,108
Minimum    
Regulatory liabilities:    
General plant 5 years  
Maximum    
Regulatory liabilities:    
General plant 68 years  
Estimated service lives of assets 100 years  
Cost of removal    
Regulatory liabilities:    
Regulatory Liabilities $ 364,398 346,418
Future income tax benefits due to customers    
Regulatory liabilities:    
Regulatory Liabilities 84,128 88,610
Unrecognized pensions and other postretirement benefits    
Regulatory liabilities:    
Regulatory Liabilities 27,872 20,196
Employee benefit costs    
Regulatory liabilities:    
Regulatory Liabilities 1,137 0
Revenue adjustment mechanisms    
Regulatory liabilities:    
Regulatory Liabilities 1,122 5,536
Water supply costs    
Regulatory liabilities:    
Regulatory Liabilities 3,386 0
Other    
Regulatory liabilities:    
Regulatory Liabilities 2,798 3,407
Future income tax benefits due to customers    
Regulatory assets:    
Total regulatory assets 180,103 157,669
Unrecognized pensions and other postretirement benefits    
Regulatory assets:    
Total regulatory assets 3,177 24,593
Business combinations debt premium    
Regulatory assets:    
Total regulatory assets 12,313 14,855
Employee benefit costs    
Regulatory assets:    
Total regulatory assets 6,370 9,815
MWRAM    
Regulatory assets:    
Total regulatory assets 9,985 9,361
Customer Assistance Program (“CAP”) balancing account    
Regulatory assets:    
Total regulatory assets 6,599 5,457
Catastrophic event memorandum accounts (“CEMA”)    
Regulatory assets:    
Total regulatory assets 986 4,819
2022 general rate case interim memorandum account    
Regulatory assets:    
Total regulatory assets 3,392 4,571
Revenue adjustment mechanisms    
Regulatory assets:    
Total regulatory assets 5,024 0
Water supply costs    
Regulatory assets:    
Total regulatory assets 0 583
Other    
Regulatory assets:    
Total regulatory assets $ 14,278 $ 8,463