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INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Amortized intangible assets: |  |  |
Gross Carrying Value | $ 23,700 | $ 21,078 |
Accumulated Amortization | 15,447 | 13,955 |
Total | 8,253 | 7,123 |
Unamortized intangible assets: |  |  |
Perpetual water rights and other | 3,867 | 3,776 |
Amortization of intangible assets | 1,100 | 1,500 | $ 1,700
Estimated future amortization expense related to intangible assets for the succeeding five years |  |  |
2021 | 1,168 |  |
2022 | 1,055 |  |
2023 | 867 |  |
2024 | 726 |  |
2025 | 599 |  |
Thereafter | 3,838 |  |
Total | 8,253 | 7,123 |
Water pumping rights |  |  |
Amortized intangible assets: |  |  |
Gross Carrying Value | 1,084 | 1,084 |
Accumulated Amortization | 122 | 116 |
Total | 962 | 968 |
Estimated future amortization expense related to intangible assets for the succeeding five years |  |  |
Total | $ 962 | 968 |
Water planning studies |  |  |
Amortized intangible assets: |  |  |
Weighted Average Amortization Period (years) | 12 years |  |
Gross Carrying Value | $ 20,686 | 18,475 |
Accumulated Amortization | 14,119 | 12,950 |
Total | 6,567 | 5,525 |
Estimated future amortization expense related to intangible assets for the succeeding five years |  |  |
Total | $ 6,567 | 5,525 |
Leasehold improvements and other |  |  |
Amortized intangible assets: |  |  |
Weighted Average Amortization Period (years) | 21 years |  |
Gross Carrying Value | $ 1,930 | 1,519 |
Accumulated Amortization | 1,206 | 889 |
Total | 724 | 630 |
Estimated future amortization expense related to intangible assets for the succeeding five years |  |  |
Total | $ 724 | $ 630 |

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