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Utility Plant and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2021
Utility Plant and Intangible Assets |
Schedule of Public Utility Property Plant and Equipment Components [Table Text Block] | The following table shows Registrant’s utility plant (regulated utility plant and non-regulated utility property) by major asset class:
|  | AWR December 31, |  | GSWC December 31,
(dollars in thousands) |  | 2021 |  | 2020 |  | 2021 |  | 2020
Water |  |  |  |  |  |  |  |
Land |  | $ | 18,207 |  |  | $ | 18,234 |  |  | $ | 18,207 |  |  | $ | 18,234 |
Intangible assets |  | 29,028 |  |  | 28,906 |  |  | 29,028 |  |  | 28,906 |
Source of water supply |  | 98,244 |  |  | 92,166 |  |  | 98,244 |  |  | 92,166 |
Pumping |  | 209,936 |  |  | 190,901 |  |  | 209,936 |  |  | 190,901 |
Water treatment |  | 83,922 |  |  | 81,272 |  |  | 83,922 |  |  | 81,272 |
Transmission and distribution |  | 1,356,649 |  |  | 1,277,361 |  |  | 1,356,649 |  |  | 1,277,361 |
Other |  | 139,895 |  |  | 128,877 |  |  | 102,831 |  |  | 95,562 |
|  | 1,935,881 |  |  | 1,817,717 |  |  | 1,898,817 |  |  | 1,784,402 |
Electric (Note 20) |  |  |  |  |  |  |  |
Transmission and distribution |  | 90,491 |  |  | 87,461 |  |  | — |  |  | — |
Generation |  | 12,583 |  |  | 12,583 |  |  | — |  |  | — |
Other (1) |  | 13,398 |  |  | 12,463 |  |  | — |  |  | — |
|  | 116,472 |  |  | 112,507 |  |  | — |  |  | — |
Less — accumulated depreciation |  | (594,264) |  |  | (568,326) |  |  | (522,672) |  |  | (502,283) |
Construction work in progress |  | 167,915 |  |  | 150,145 |  |  | 123,600 |  |  | 118,370 |
Net utility plant |  | $ | 1,626,004 |  |  | $ | 1,512,043 |  |  | $ | 1,499,745 |  |  | $ | 1,400,489 |
(1) Includes intangible assets of $1.2 million for the years ended December 31, 2021 and 2020 for studies performed in association with the electric segment.
Schedule of components of intangible assets | As of December 31, 2021 and 2020, intangible assets consist of the following:
|  | Weighted Average Amortization |  | AWR December 31, |  | GSWC December 31,
(dollars in thousands) |  | Period |  | 2021 |  | 2020 |  | 2021 |  | 2020
Intangible assets: |  |  |  |  |  |  |  |  |  |
Conservation programs |  | 3 years |  | $ | 9,486 |  |  | $ | 9,486 |  |  | $ | 9,486 |  |  | $ | 9,486 |
Water and service rights (2) |  | 30 years |  | 8,695 |  |  | 8,694 |  |  | 8,124 |  |  | 8,124 |
Water planning studies |  | 14 years |  | 12,258 |  |  | 12,141 |  |  | 11,019 |  |  | 10,898 |
Total intangible assets |  |  |  | 30,439 |  |  | 30,321 |  |  | 28,629 |  |  | 28,508 |
Less — accumulated amortization |  |  |  | (26,401) |  |  | (24,460) |  |  | (25,109) |  |  | (24,305) |
Intangible assets, net of amortization |  |  |  | $ | 4,038 |  |  | $ | 5,861 |  |  | $ | 3,520 |  |  | $ | 4,203 |
Intangible assets not subject to amortization (3) |  |  |  | $ | 400 |  |  | $ | 399 |  |  | $ | 399 |  |  | $ | 399 |
Schedule of estimated future consolidated amortization expenses related to intangible assets | Estimated future consolidated amortization expense related to intangible assets for the succeeding five years are (in thousands):
|  | Amortization Expense
2022 |  | $ | 672 |
2023 |  | 672 |
2024 |  | 672 |
2025 |  | 672 |
2026 |  | 672 |
Total |  | $ | 3,360 |
Schedule of reconciliation of the beginning and ending aggregate carrying amount of the asset retirement obligations | The following is a reconciliation of the beginning and ending aggregate carrying amount of asset retirement obligations, which are included in “Other Credits” on the balance sheets as of December 31, 2021 and 2020:
(dollars in thousands) |  | GSWC
Obligation at December 31, 2019 |  | $ | 8,863 |
Additional liabilities incurred |  | 165 |
Liabilities settled |  | (58) |
Accretion |  | 350 |
Obligation at December 31, 2020 |  | $ | 9,320 |
Additional liabilities incurred |  | 148 |
Liabilities settled |  | (120) |
Accretion |  | 369 |
Obligation at December 31, 2021 |  | $ | 9,717 |

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