Acquisition (Details) $ in Thousands	May 01, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	May 31, 2021 customer_connection wastewaterUtility	Dec. 31, 2020 USD ($)
Asset Acquisition [Line Items]
Goodwill		$ 36,814	$ 36,814		$ 31,842
BVRT Water Company
Asset Acquisition [Line Items]
Number of wastewater utilities | wastewaterUtility				5
Number of connections served | customer_connection				3,800
Number of potential customer connections | customer_connection				61,000
Hawaii Water Company | Hawaii Water Asset Acquisition
Asset Acquisition [Line Items]
Cash paid	$ 4,200
Asset acquisition, assets acquired	1,600
Asset acquisition, liabilities assumed	300
Goodwill	$ 2,900