Revenue Recognition - Contract Balances (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Capitalized Contract Cost [Line Items]
Accounts receivable	$ 3,260	$ 2,303
Deferred revenue - ICFA	19,380	20,974
Total contract liabilities	19,380	20,974
Water services
Capitalized Contract Cost [Line Items]
Accounts receivable	2,170	1,179
Wastewater and recycled water services
Capitalized Contract Cost [Line Items]
Accounts receivable	$ 1,090	$ 1,124