Goodwill & Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
INDEFINITE LIVED INTANGIBLE ASSETS:
Indefinite lived intangible assets	$ 1,743	$ 1,741
DEFINITE LIVED INTANGIBLE ASSETS:
Gross Amount	25,385	25,384
Accumulated Amortization	(16,789)	(15,940)
Net Amount	8,596	9,444
Total intangible assets, Gross Amount	27,128	27,125
Total intangible assets, Net Amount	10,339	11,185
Acquired ICFAs
DEFINITE LIVED INTANGIBLE ASSETS:
Gross Amount	17,978	17,978
Accumulated Amortization	(14,565)	(13,718)
Net Amount	3,413	4,260
Sonoran contract rights
DEFINITE LIVED INTANGIBLE ASSETS:
Gross Amount	7,407	7,406
Accumulated Amortization	(2,224)	(2,222)
Net Amount	5,183	5,184
CP Water Certificate of Convenience & Necessity service area
INDEFINITE LIVED INTANGIBLE ASSETS:
Indefinite lived intangible assets	1,532	1,532
Intangible trademark
INDEFINITE LIVED INTANGIBLE ASSETS:
Indefinite lived intangible assets	13	13
Franchise contract rights
INDEFINITE LIVED INTANGIBLE ASSETS:
Indefinite lived intangible assets	130	129
Organizational costs
INDEFINITE LIVED INTANGIBLE ASSETS:
Indefinite lived intangible assets	$ 68	$ 67