CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Accounts receivable, allowance for doubtful accounts	$ 3,593	$ 3,642
Other accounts receivable, allowance for doubtful accounts	$ 131	$ 131
Common stock shares issued not disclosed	true
Common Stock, Par Value (in usd per share)	$ 0	$ 0
Common Stock, Shares Authorized (in shares)	60,000,000	60,000,000
Common Stock, Shares, Outstanding (in shares)	39,635,452	39,082,470
GOLDEN STATE WATER COMPANY
Accounts receivable, allowance for doubtful accounts	$ 3,279	$ 3,233
Other accounts receivable, allowance for doubtful accounts	$ 131	$ 131
Common Stock, Par Value (in usd per share)	$ 0	$ 0
Common Stock, Shares Authorized (in shares)	1,000	1,000
Common Stock, Shares, Outstanding (in shares)	178.3836	178.3836