INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Amortized intangible assets:
Gross Carrying Value	$ 21,079	$ 20,967
Accumulated Amortization	13,955	12,893
Total	7,124	8,074
Unamortized intangible assets:
Perpetual water rights and other	3,776	3,776
Amortization of intangible assets	1,500	1,700	$ 1,600
Estimated future amortization expense related to intangible assets for the succeeding five years
2020	958
2021	870
2022	747
2023	569
2024	446
Thereafter	3,534
Total	7,124	8,074
Water pumping rights
Amortized intangible assets:
Gross Carrying Value	1,084	1,084
Accumulated Amortization	116	112
Total	968	972
Estimated future amortization expense related to intangible assets for the succeeding five years
Total	$ 968	972
Water planning studies
Amortized intangible assets:
Weighted Average Amortization Period (years)	13 years
Gross Carrying Value	$ 18,476	18,364
Accumulated Amortization	12,950	11,899
Total	5,526	6,465
Estimated future amortization expense related to intangible assets for the succeeding five years
Total	$ 5,526	6,465
Leasehold improvements and other
Amortized intangible assets:
Weighted Average Amortization Period (years)	17 years
Gross Carrying Value	$ 1,519	1,519
Accumulated Amortization	889	882
Total	630	637
Estimated future amortization expense related to intangible assets for the succeeding five years
Total	$ 630	$ 637